Have you read any of the
baby blogs on breastfeeding? I think most of the women here will tell you that I know a heck of a lot about breastfeeding. . .I haven't covered this issue. . .but I can and I'll link back if you'd like.
First of all, low milk supply is 99% of the time caused by mismanaging the breastfeeding relationship--even in women who have some issues like hypothyroidism and/or PCOS. Women don't realize that they may have issues that will affect their supply and then don't get help or support and before you know it, they don't have enough supply and don't know what to do about it. Hypothyroidism and PCOS are things that certainly make you more
prone to low supply. . .but it doesn't mean that you won't be able to breastfeed. It just means that you'll have to be extra careful about how you manage it.
Talking to your doctor is never a bad idea. However, most doctors are not experts in breastfeeding and I know personally I've been given bad advice by some of them--even though they are very capable in other areas. I also highly recommend that you seek out a certified IBCLC lactation consultant. Don't assume that the lactation consultant in the hospital is IBCLC certified--and believe me it makes a HUGE difference.
And yes, you should take the breastfeeding class--as long as it is about breastfeeding and not about pumping, or the 'just in case' bottle or what not. You'd be surprised.
There are numerous galactagogues you can take to increase supply but I wouldn't worry about that yet. They all will work within 24 hours if you need them.
I would highly recommend that you look into getting a supplemental nutritional system. I would find out how you can get one. . .but wait and see how it goes before actually getting one. It is a bag with a tube that you attach to your breast. You fill the bag with expressed milk or formula and tape the tube to your breast. It has the advantage of allowing babe to get the nutrition he/she needs AND building your supply by sucking.
There's no reason that you should miss out on breastfeeding and even if you're not able to exclusively breastfeed. . .ANY breastmilk shows astronomical benefits for the infant. One final thought for you: the mind is very powerful. If you keep telling yourself you can't bc you have these other issues, then it is likely you're going to have problems. Rather than thinking you can't, think that you can--even if you need a little help. Arm yourself with the tools that you may need rather than thinking it's a waste of time. You're more likely to be successful that way.
Sorry for the book.