I am on implanon , i am 3 weeks late for my period, and i have been having sex with my husband, so unprotected. I keep getting dizziness spells, my breasts are tender, i am having pelvic cramping and back pain like i have a UTI, but no dark or cloudy urine. I have increased vaginal discharge, ive taken 3 pregnancy tests , 5 days apart each, and they are all negative. what do I do?