I started bleeding again right after my period was over and experienced pain in my vaginal area as if it were stretching. As well as pain from my lower tummy, is it a miscarriage?

my period usually lasts for about 3-5 days, but for some reason at the beginning of this month i started to bleed again. It felt as if my anus was stretching and everytime i got up the pain was unbearable. i also had little cramps here and there in my lower tummy.