Well I know what implantation bleeding is..I thought I had it so I took another ept test..It was negative...!!! Again..And im not sure how late I am on my period..However it has three types of blood in this mucus that only happens once in awhile, its partly vrey very dark red, like a normal period..Then light pink brown (not now only in the beginning) and also very very bright red here and there. Right now its mainly bright red with bits of very dark......Im having horrible cramps...Do you think my body rejected pregnancy like a mini miscarriage or something??? Please someone help, im 17 and I cant sleep or eat right, please please whats going on? The tests are always negative but I thought this was implantation bleeding!! Help!!!!!