I ve been on the implanon for 6 months now, have bad regular period until recently me and my boyfriend had sex and I m 26 days late with alot of pregnancy symptoms, I ve been very sick to my stomach, tired more than normal, blue veins in my breast are very vivid recently, piercing more (I have a 10 month daughter an I know how my body is when pregnant) I feel pregnant taken 10 hpt all negative, i don t know if it s the birth control stopping my period or if I m pregnant with negative results.