hi there, im asking on behalf of my girlfriend, she has come on her period during her pill her pill that she is on (microgynon) this is the fourth time now, it started while we was having sexual intercourse, she got shooting pains about 2 hours after, she is bleeding really heavy and it's bright red, she is also having pains when she uses the toilet for a wee. what can it be? I am really worried about it myself please can you help, many thanks