Yes you may. Anyways, I am a 22 year old female. I am 5ft even and I weigh 107 pounds. About a month ago, I had unprotected sex and since then I have taken about four pregnancy test (all of which came out negatvie). Last Saturday, I had a "period," but it lasted about a day or two. On wednesday, I started having pinkish tissue in my urine and yesterday, I had a tinge of blood, but that was it. I read online that I could have a miscarriage, but I am wondering how that is possible if I were not pregnant to begin with?