I agree with E4Areason. You def need to see a doctor to confirm if you are or arent. Are you having sex with no form of birth control?
well then like i said you better go to the Dr and have them do a blood test.
im also having back pain and sore breasts
technically yes you could still be pregnant even with the negatives. but probably not after being two months late you should be getting a + by now, the only thing to do is go to the Dr