I was having sex when i got my menses, is there any chance to get pregnant?

Technically, no: Technically, its not possible to get pregnancy from intercourse during your period. However, other types of bleeding can be confused with a period. For example, sometimes intercourse itself causes some bleeding. This bleeding isn't your period and you could still get pregnant. Its always best to assume that you could get pregnant anytime you have unprotected intercourse. Best wishes!