He Came Inside While I Had My Period

It was my first time to have sex while I had my period. A lot of people told me it's safe. The reason why I haven't tried until recently, it's cause I think it'd be gross and messy but it wasn't, thank God. But he came inside of me. Now I'm concern whether I have to worry about getting pregnant or not. Thoughts or experience on this? Would really help a sister out!