Hello,
You have not given the date of your last menstrual period but if you are expecting your periods, then chances are there that you can be pregnant. If you miss your periods then you can test 1 week- 10 days after you miss your periods or you can test for pregnancy by a highly sensitive pregnancy test 10 days post ovulation with a sensitive ( 20 - 25 mIU ) pregnancy test. Also I would suggest you to get your serum HCG levels estimated since this is more specific than urine for pregnancy tests. The HCG (it is a hormone) levels rise only in pregnancy and its presence will confirm the status of your pregnancy.
I hope it helps. It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
since the tests say its — its highly unlikely to b a false one by now. I think its the too many morning after pills that have affected ur periods. try not to panic and make sure u use protection next time u have sex to avoid such situations.
good luck!