Hi,

I guess that we would need to know quite a few ore specifics about your situation before we could give more than the most general information. It would depend what medications you were taking and why you were taking them. Sometimes women have a health condition that means they normally make way too much prolactin - the medication dampens this down in their body.
All the signs so far seem good for you - I wouldn't necessarily anticipate a problem - you have done all the right things so far. Joining ABA, doing a class and badically finding out how breastfeeding works, and forming a support network is the best investment any mother to be could make. Women have high levels of prolactin while they are pregnant - but the placenta makes other hormones that inhibit prolactin - that'swhy you only make small amounts of colostrum whilst pregnant. When the placenta leaves your body it allows the high levels of prolactin to "do their thing" - make milk! Prolactin levels are high immediately postpartum, but over time they return to fairly low levels, but lactation continues just fine - milk supply becomes driven by the baby's feeding - the more you feed, the more milk you make - rather than being driven by high levels of prolactin as it is in the first weeks of lactation.
Frequent feeding is the best way of ensuring a good milk supply. Few people understand that babies feed 8-12 times in 24 hours - this is normal! Allowing baby unrestricted feeds will ensure the milk making system works optimally. Lots of skin to skin contact from birth promotes prolactin production.
Rodney Whyte is an amazing resource to have in our community - we are very lucky. He specialises in drug therapy in pregnancy and lactation. Another chat with him may be worthwhile to guage his opinion on the effect the medication you are taking might have on your milk supply, and what alternatives might be available. It must have been reassuring to find that the medication would not be problematic for your baby.
Feel free to pm me with more details if you wish.