Tried to get pregnant april 23-25 ejaculated in had a period may 1-5 tried again may 13 ejacula. in day after ovula. now i'm bleeding could i be prego?

Not likely: Bleeding before a period is due is rarely due to pregnancy. It's more likely that you didn't ovulate, since ovulation is what causes regular periods.

You could, but...: Seems like you are on a typical 28 day cycle and that your normal period would occur now. There are some instances in pregnancy where you could have bleeding that seems like a period, but is actually part of being pregnant. Using an over the counter pregnancy test from the pharmacy would help answer your question better. Hope that helps.