Advice please

I am 26 years old I lost a baby on February 20th 2015 I had a D&C the same day. I've been trying to get pregnant ever since I have had sex hundreds of time just trying to get pregnant I'm frustrated my fiance's frustrated. I don't know what to do I went to the doctor last Wednesday and had a pelvic ultrasound. I got the results back and he says that I have a cyst on my ovary. This month has been weird I have took over 20 pregnancy test. I ovulated on the third of me and did have sex that day since then I've had weird symptoms heartburn backe cramping lots of camping and headaches. I am really worried should I be pregnant right now and its just not showing. My period is not due till may 17th. I know I should wait to test but I can't I'm so anxious... please help with advice my friends think I'm crazy :(