3 weeks before my period was when i had sex- then after that it was roughly 60 days before my next period. Then it lowered to roughly a 30 day cycle, then went back up again to a 40 day cycle. We did have sex a couple of days ago (sunday), and i was having some cramps, then the next day (monday) i came on.. But now (Wed) I'm still having odd feeling cramps. I usually have light cramps a couple of days before my period which is normal, but this time they are going on through my period which isn't normal for me! All we want is to start our own family, yet it seems impossible. How am i ever going to get pregnant when they are such big differences in time lengths with my cycles?