I am 29 years old. I have been off the pill from June last year. My periods have been regular lasting around 4/5 days. But last month it was 4 days late I took a pregnancy test but was negative. This month my period came on time but was very light for 2 days then eventually came heavy. It ended on Thursday but I still have slight spotting with very small clots. I had a smear test last year that was borderline but was negative for hpv so they are recalling me in 3 years. Should I be concerned