I have two kids (also without pain relief during my labor, although my labors were very short)... thought I'd have more after med school before I had the second... now I'm pretty sure I'm done. I will willingly place myself among those who claim to be to selfish to have children - I just didn't realize it until I had a second child. I love everything about my first child - and love everything about my second child, but am having a very hard time maintaining saintliness when I have them both at the same time.
I think part of the problem is that I don't have much outside help. My husband is a great helper, but we don't have family in town and don't really have a babysitter either.
Another problem is probably that I expect too much from myself, many recent discussion with other parents have made me realize that many mothers experience guilt about their parenting and also make a lot of the mistakes that I do. I had fantastic parents and perhaps expect more than is possible from myself.
Anyway, so I probably had one child too many - hate to call it a mistake, it wasn't, I'm glad that both of my children are a part of my life.... anyway, even if it was a mistake, it doesn't matter, I'm a mother to two children. I love them both. Theres nothing I can do about it except do the best that I can. (And probably avoid having more children).
Obviously making wise decisions (like for me avoiding a third child) is important, but the truth is, most people won't know what is too much until its too late.
So, perhaps the answer for me is to not go into medicine - well, as previously mentioned, I'm selfish. I'm not happy as a SAHM, in fact, I'm a worse mother as a SAHM than a working mother. So, I need a job, one I enjoy, that will afford us to have a stay at home parent, which will be, most likely, my husband, who is not nearly as motivated as I am (and a better parent).
Anyway, obviously the issue is a complicated one with different answers for different people. I congratulate those who have decided to not have children or to have only one child because its probably a smart decision. I also applaud those who have the patience and love and selflessness within them to raise many children. I wish I was more like you.