My husband and I are trying to conceive we had sex on the right da of ovulation,but the day after I had light bleeding,this has never happened before,my pms is due in 16days,am I pregnant or not

WAY to early to tell..

May be implatation bleeding, or could me a dozen other things, there is no way to tell at this point. You have to wait till your period is due, and if you miss it, wait till the next week and do a home pregnancy test.