If you had unprotected sex and took a morning after pill two days later then you missed a normal pill and had unprotected sex and then started your period could you still be pregnant?

Yes, it's possible you are pregnant. Go see a doctor or take a home test to find out for sure. If you aren't pregnant, you still need to see a doctor if you haven't had your period for two months. It isn't normally healthy for a women not to have her period.