My husband and i have been trying to get pregnant and so far have been unsuccessful. would having sex on my period increase our chances?

No: Get an ovulation kit. I believe they are fairly accessible (local pharmacy). Try and figure out when you're ovulating and that's the best time to have intercourse (sex). Of course, there are other ways to determined ovulation (e.g. measuring a slight rise in BBT:basal body temperature--use a digital thermometer for this, though, as the rise is very small). Good luck!