Hi, I am 23 years old and have been having severe lower back pain. I was in a four wheeling accident back in 2005 and ever since then my back has not been the same. I have been to doctors numerous times for them to tell me that the pain I have been having is mechanical. Meaning, its my muscles and there's not much I can do about it other than some light stretching, swimming etc. My boyfriend and I have been trying a baby, this will be the second month of trying and I have been having some issues. A few weeks back we were having intercourse and it become very painful, afterwards, when I went to the washroom and wiped, there was blood. After this has hapenned from that night on I began having pain in my lower abdomin/pelvic area and right in through to my lower back. In which I was have severe lower back pain since 2 weeks before this pain in the pelvic area began. The pain then got so bad that I ended up in emerg the next day. They did a urine test in which they found a little bit of blood. The dr did an internal exam and felt no lumps or anything at all. They said the blood may have been because I was about to get my period (I has been due the day I went into emerg). I ended up being 9 days late, having my period. It was a pretty normal period other than a lot of clear very stretchy discharge almost, just very thin. I have taken pregnancy tests all negative. Once I got my period a lot of the pain had subsided. I got my period June 6th 2012. Its not June 18th with my most fertile time of trying for a baby is now. Starting today the pain come back in my pelvic/lower abdominal area and the lower back pain become extremely intense. Also I have been having some pain on my right side as well under the ribs. I have an ultra sound on my pelvic area on July 5th as well as an x-ray on the lumbar spine. Just wondering if anyone has experienced this before or can tell me what their thoughts are?