Me and my boyfriend had unprotected sex not to long ago, my period started the 5th and ended the ninth. We had unprotected sex on the 16th, 18th,19th,20,22. On the 28th i went to the washroom and noticed some blood. Very little though, but it was brownish reddish a bit dry.it was strange! I'm wondering if it might be implantation bleeding? my period isn't due until the forth of August! I don't know when to take a pregnancy test, my birthday is the 3rd of August so i would like to know if im possibly pregnant we had plans to celebrate, and i was going to dye my hair but now i don't know! What do you think?