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Do I Have to Stop Breastfeeding During Pregnancy?

I have written a lot about breastfeeding during pregnancy on my blog. This is because I have actually gotten pregnant while breastfeeding twice.

I get many questions about how to get pregnant while breastfeeding.

I also get the question do I have to stop breastfeeding during pregnancy?


When I got pregnant with my second baby, I was still breastfeeding my first baby and she was just over a year old. I was so worried that breastfeeding might contribute to a miscarriage and anxious if it was safe.

I didn't even get clear answers immediately from my OB office as different doctors gave me different answers. In the end I was able to breastfeed through the beginning of this pregnancy and my baby weaned when she was ready.

There is a lot of misinformation about pregnancy and breastfeeding, so I decided to share what I learned as I personally went through it.

Do I have to stop breastfeeding during pregnancy - Breastfeeding Needs

Now as always I will add to check with your OB/GYN if you have concerns, or you are having a high risk pregnancy. I am not dispensing medical advice but sharing my own anecdotal experiences.

When I got pregnant with my second baby while still breastfeeding, I contacted my OB who had me come in for a blood test. I also was told by the nurse that the Dr. recommended I stop breastfeeding right away because pregnancy could cause miscarriage. What?!

I immediately freaked out because I was not ready to stop breastfeeding cold turkey. I spent a lot of time feeling upset and searching for information on the internet, before I called the office back and said I wanted a second opinion.

My research led me to believe it is perfectly safe to breastfeed while pregnant, and when I called back I spoke to another Dr. who said it was fine and not to quit breastfeeding.

My OB practice is made up of several doctors which is what led me to get advice from two separate doctors which contradicted each other. While I found this confusing, and I wanted to do whatever was best for my pregnancy, I did not want to stop breastfeeding if it was not necessary.

Getting the okay from another OB that it was fine to continue was enough for me and I went on to have a healthy pregnancy, and breastfeed until my daughter weaned when I was around 12 weeks pregnant.

Breastfeeding and Pregnancy - Breastfeeding Needs

Why would it be recommended to stop breastfeeding when pregnant?

There seems to be an old school train of thought that since breastfeeding releases oxytocin and this hormone can cause uterine contractions, it could cause a miscarriage.

According to the American Pregnancy Association the amount of oxytocin released is such a small amount during breastfeeding it is not enough to cause preterm labor.

The truth about breastfeeding and pregnancy

According to the Mayo Clinic, in most healthy pregnancies it is perfectly safe to continue breastfeeding.

Many babies will wean themselves when milk begins to change around four months pregnant. This is what happened with my daughter and I went on to have an uneventful pregnancy.

With my third pregnancy I was also still breastfeeding, and this time my son kept nursing throughout the entire pregnancy and I had no issues.

By this time my OB was completely on board with it and her only recommendation was to eat enough calories for breastfeeding and pregnancy, which was about 600 more calories a day than when not pregnant.


When it comes to breastfeeding and pregnancy there are a few items to consider.

If you have a high risk pregnancy or a risk of preterm labor it may make sense to wean. If you are carrying multiples you may need to wean as well. Always consult with your OB if you have concerns.

It is also okay to want to wean for personal reasons even if safety is not a factor. Breastfeeding while pregnant can be exhausting physically and emotionally. Your baby's age can also be taken into consideration.

If your baby is under 12 months old you will probably need to supplement, and watch their intake since breastmilk supply can decrease during pregnancy.

In my case my babies were both over a year old when I got pregnant so I did not have to worry about my milk supply.


In most cases it is completely safe to continue breastfeeding during pregnancy, and you do not need to stop breastfeeding. T

he exceptions to this are a high risk pregnancy or other pregnancy complications. Always check with your OB/GYN and let your own feelings guide you through this.

Please let me know if you have any questions about breastfeeding while pregnant at all!


Tuesday 21st of January 2020

Did your breast milk change to be more colostrum like after the baby was born?

Jen Brenan

Tuesday 21st of January 2020

I think so yes, but I still nursed my toddler in tandem and he didn't seem to care.


Thursday 1st of August 2019

Wondering if you have any inexperience / information on tandem feeding, toddler and newborn? I actually can’t believe I am even talking about this as with my firs to hated breasteffinf so much and now here we are she is 22 months with n sign of stopping and I am 28 weeks pregnant. I thought she would wean during my pregnancy when the milk changed but she’s becoming more obsessed and I am increasingly becoming anxious about the prospect of having to tandem feed.


Thursday 1st of August 2019


So I actually do have experience with this! My second child continued to breastfeed the entire time I was pregnant with my third and last baby. I also thought he would wean (bc my first did shortly after I got pregnant) and was anxious about it. But I did go on to do it and it was not that bad. I wrote a post about it and I think I will update that post soon since I am years out from it all now! Good luck!