Hello, my situation is really complicated. I had unprotected sex on the 24th of July twice with my b/f. A week later i got a campy feeling and my lower back hurt. The 9th of August i started spotting for six days( this was a week before i should have gotten my period). The next week i started to feel very tired and nauseated all day. I went to planned parenthood and took a pregnancy test which came out negative. i also took two pregnancy tests at home all came back negative. And now i started bleeding again on the 30th of august. I don't know what to think because i have never bled two times in one month. Is it possible it was implantation bleeding the first time? I'm just really confused wish someone could give me some advise.