I never used to feel badly when I Od, but oh my after DD I went through some really rough cycles. I had horrible headaches, nauseated and awful O cramps. I basically felt like sh**. Now that DD is almost 2 my cycle is back to pretty much normal, which is funny because I started AF at 9 weeks PP(even with EBF, ugh), but it took about 1.5 years for me to feel normal again. I had some pretty major hormonal issues, I think because I did start AF so early PP that combined with BF hormones just made my body really confused. Of course now that I am back to "normal" I wouldn't mind getting pg again, LOL. Then it would all start again.