Can a woman get pregnant a few days before her period and still have period?
Okay it's time to kill two birds with one stone. I'll stick with answering this question and won't mention STDs (someone else has done that already).
I don't know your age but whatever it is I know the "Am I pregnant?" question is very distressing so I'll answer this in a way that should calm you down in future cases too.
- The menstrual cycle
Now, since you're menstruating by now you at least know that it happens periodically (period is periodical, lol why am I now realising this word play. Don't mind me)
So medical literature will tell you that an ‘average' period will last 28 days (plus or minus 7 days) and this helps them explain to you what happens.
Let me put a picture of the cycle here to help me (bear with me though, this part is important)