I'm 16, I just had my 7 day period. Tuesday was the 7th day. Yesterday my boyfriend and I did oral for only like 3 minutes. Today I went swimming and it felt like I was bleeding again, so I got out. I was bleeding but it was light and not heavy so I cleaned up and stayed out of the pool. I just got home from a long long day , and blood again!! Went through my underwear on to my shorts. Btw I wasn't bleeding Wednesday!! It's like it stopped for a day and came back. Why??