Two weeks ago I started getting lower belly cramping and after 2 days I notice when I went to the bathroom there was a little bit of clear discharge with pink in it. It only happened once. For the next 2 days I had clear discharge with a little red only once when I wiped. Then i had a little bit of spotting the next day. then nothing. Now I am 2 weeks late for my period took a pregnancy test last friday(which was neg.) and now for 2 days I see brown only when I wipe. It has stopped. Any ideas what this could be and if I should be worried.