How do I know?

Am I ovulating? How do I know?

Today is day 16 of my first birth control-free cycle, and I've been charting my BBT and doing an OPK every day. So far, no noticable drop or rise in temperature, and no smiley face on the OPK screen. :(

I have, however, been feeling kind of crampy in my lower abdomen for the past two days. Am I just imagining this? The cramps feel pretty darn real and aren't really like period cramps. Should we go ahead and do a BD even though I have no idea how long my cycle is going to be?

This is all so confusing and overwhelming. It's so strange to be doing things backwards - to KNOW that I'm going to have problems conceiving before we have even tried.

Still waiting for my smiley face...