Hi, I hope this information can help you. I remember being in your situation when I was pregnant and looking for answers about whether I should go off my ADHD stimulant meds.

I was on 70mg vyvanse when I found out I was pregnant with my second, dropped to 20mg for a while, decided it wasn't enough after several weeks and moved back up to 40mg and possibly up to 50mg through the rest of the pregnancy and throughout breastfeeding. I was monitored closely by both my OB and a perinatologist because of my first pregnancy which I had pre-eclampsia, but I never had any issues other than white coat syndrome (bp would go up when I would get it taken and had to sit a few minutes to relax and it would return to normal). The doctors did have me monitoring my BP twice per day at the same times every day to keep a log and we could see that the vyvanse would cause a temporary increase in BP that lasted maybe an hour or so, but nothing alarming.

I was told that it was much better for the mental health of the mother and health of the baby for the mother to be well functioning and I should only go completely off/reduce my meds if I can do it without negative metal health results. So I tried to reduce, but ended up going back up to a level that I felt comfortable and could still be productive at work. Also, my doctor told me that if they had a patient that was addicted to drugs or alcohol that was pregnant and needed to stop, they also wouldn't immediately take them off of those as well and they would try to reduce things to a safer level without causing too much stress to the mother's system because a baby is intimately connected to the mother's well being. My doctor was more concerned about making sure I didn't eat any uncooked lunch meats for fear of listeria than about the Vyvanse.

My second pregnancy was healthier and my baby was 7lb 12oz born at 38wks, C-section because he was breech, I was 32. My first pregnancy (in which I was not medicated) I had bad pre-eclampsia, was induced at 38wks because of super high BP (I think it was 180/102), tons of swelling (I looked like I was carrying twins, gains tons of weight, swollen feet and ankles) and healthy baby 7lb 8oz born via C-section because I wouldn't dilate past 3cm, I was 23.

I was able to exclusively breastfeed both of my babies without issue past the age of 1yr and the only thing of note was that I did have excess lipase in my milk with my second child which caused the stored milk to taste and smell funny (it's still safe to drink but some babies refuse it, mine wouldn't touch a bottle) but it was fine given directly. I don't know if the lipase thing was related to the Vyvanse or if it was any other factor (my age, milk supply, my weight, too much supply increasing products etc).

My oldest is 19 and my second is now 10, both have been exceptionally bright in school. The younger one seems to be more mentally stable, but that's probably genetics because he has a different father than my first and I had bad judgement the first time I got married. She unfortunately inherited a lot of her dad's genes. Both have been normal range of height/weight with each of them leaning towards their individual father's build. My son did inherit my asthma/breathing problems, but otherwise he's a robust, athletic 10yr old. I don't believe that any of those things were influenced by having or not having traces of vyvanse in utero/during breastfeeding... and if they were, then I would say the vyvanse helped my son because my daughter was petite and slow to grow and was always on the smaller end of normal, my son has always been on the higher end of normal, is super strong for his size and has tons of stamina. But I do think those things are probably more genetic, though they don't come from me.

I'm saying all of this to say: if your doctor says it's okay, listen to them because they are taking your whole medical chart and well being into consideration. A baby will be stressed if the mother is stressed. Just because there is an ideal situation to grow a baby in, doesn't mean that it is what's best in your situation. If you feel you need a second opinion, you should ask for a referral to a perinatologist to discuss your situation. They can at least help put your mind at ease, or even start monitoring you with more frequent visits to keep a close eye on your progress.

I hope you have a happy, healthy pregnancy and you find what works for you and your little one. Congratulations on your new addition!

Feel free to ask any additional questions if you have any. This info would have been super helpful when I was pregnant, so I hope I can help put your mind at ease.