Had period a week ago then had unprotected sex sunday and monday. now im bleeding again.

It sounds like...: ... you had unprotected sex on about day 7-10 of your cycle (day 1 is the first day of your period). A woman is not likely to get pregnant on one of these days. Having some mid-cycle bleeding is not uncommon and is more likely due to hormone fluctuations than pregnancy. Use reliable contraception the rest of this cycle and check a pregnancy text if your period is a week late. Good wishes:)