Hopefully someone will be able to offer some advice. for the past few weeks I've had lower back pain off and on, switching from one side to the other. then came this week, after it all had gone away I noticed occasional bleeding, and by occasional I mean when I urinate it was there, so I'd use a tampon, then next time there was nothing. I do not have a period b/c I cycle my pills so that I don't take the sugars but this has got me confuzzled. I took a pregnancy test but it was negative, now I'm not sure what's going on if its kidneys or something else...any help?