have not had a real period since having implant removed?

Hi,
Welcome to ehealthforum,
If you have been sexually active (without using any other form of birth control) after coming off the Implant, then chances of pregnancy cannot be ruled out. Sometimes your normal fertility can come back early (depending on type and duration of birth control method used), and you can have ovulation (egg release from ovary) in your immediate cycle. Wait and watch for your next periods. If you suspect to be pregnant, look out for development of any new symptoms suggestive of pregnancy. If you do not get your next periods on time, or if you get abnormal periods or if you develop symptoms suggestive of pregnancy, you should consider visiting your gynecologist (not GP) for thorough examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). Sometimes urine pregnancy test (UPT) can also show false negative results. UPT kits are calibrated ones, so unless the hormone levels in urine reach a certain level, they do not show positive results. Blood/serum HCG level estimation is accurate. UPT should always be done on early morning first urine sample as the concentration of pregnancy hormone HCG is believed to be highest in this sample. You can also consider repeating UPT on early morning first urine sample to see if turns positive or get the blood/serum HCG level test done to confirm/rule out pregnancy accurately.
Take care.