Ladies I have a question I’m on the pill.. been on it for a while now but notice my period always…

Ladies I have a question I’m on the pill.. been on it for a while now but notice my period always last about 9 days maybe 10 sometimes.. is this a side effect of the pill also my periods tend to be heavy.. I’m getting a bit concerned I did get a pap in June all was normal and have no stds..anyone go through anything similar?