It didn't happen with my first son...since I had bicornuate uterus which clamped down on the placenta splitting it into 2, caused postpartum hemmorhage, blood transfusion, iron pills for 3 months and 2 HIV testings which both came out negative. During the 4 days I tried, I had no colostrum, I tried pumping, my mom fed me a bunch of Chinese foods and tonics and yet, it didn't help but helped me lose the 32lbs I gained in 6 weeks. It turns out I didn't know that it could have came in 5 days later. But both lactation consultants were not so nice and one even told me that if it didn't happen in 4 days it wouldn't happen at all. So, I gave up after that.
I'm due to have another baby boy August 12th, actually took a breastfeeding class this time, and bought a book, and hopefully it will happen this time around.
I've discussed it with my ob practice since anyone of the docs there are on-call, and they will check my birth plan, and make sure I get some sort of medication to stop the blood clotting and hopefully not have to get a blood transfusion afterwards. Because if anythiing, all the medication, IV, etc that I endured may have prevented breastfeeeding besides the mental and physical part of it for me.