Trying to Concieve

For awhile now, maybe 6 months, my boyfriend and I have been trying to have a baby. We have sex almost everyday and he cums in me when we do. Ill then get pregnanvy symptoms but it will turn out to just be my period. About a year ago we had a moscarriage and so i am scared i can not have babies. I started my period yesterday and looking at the cycle i am confused. when is the best time according to this to try to get pregnant? please help. we have been wanting a baby for so long now.