S it possible to still be pregnant if i have gotten my period i am experiencing heavy blood flow how can i know if im pregnant or not?

I have had 5 pregnancies and with 3 of them I had bleeding, one of them I had 3 regular periods in the first 20 weeks with spotting. so its very possible to be pregnant and still have your periods. the only way to find out if youre pregnant is to be tested, either a home pregnancy test or a blood test (which would be the most reliable) Goodluck