Hi I m constantly worried at the minute I m 19 and would just like quick answer if possible. My girlfriend is due her period in the next few days (on the weeked) and is on the pill cilest. This is her 3 strip of pills and last month had her period on sunday as apposed t the saturday like her first month being on the pills. Last month her period was light and started sunday and had started to subside by Wednesday afternoon she had finished by Thursday. Is this normal when on the pill ?