Hi im 16 and my period is usually pretty irregular, but the past months it had been coming on time. My second to last period was a week late and when it came i had a lot of discharge and later on it turned into normal menstrual fluid. the next one came right on time and was perfectly normal. i recently became sexually active we used protection but once again my period was 10 days late and finally i got cramps but again mostly discharge with some bleeding. is this normal?