I just want to find out if i am or not

Hi,
Welcome to ehealthforum,
Sometimes there can be contraceptive failures. If you have taken emergency contraceptive pills (ECP) within 48 hours of the unprotected sexual contact, it should work in preventing pregnancy. Since it contains high doses of hormones, it can disrupt your normal hormonal pattern, and cause bleeding and period abnormalities. Withdrawal bleeding usually occurs after about 5-10 days of taking the ECP. Wait and watch for your next periods/withdrawal bleeding which might be delayed.
If you are experiencing symptoms suggestive of pregnancy and if you suspect to be pregnant, you should consider visiting your doctor/gynecologist at the earliest for further 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 visit your doctor/gynecologist for further evaluation to confirm/rule out pregnancy. All the best.
Take care.