10 day late period but negative pregnancy test
I am ten days late for my period. It was due dec 17th or 18th. I had gotten them pretty regular the last two months about every 30 days. My boyfriend and I briefly had unprotected sex on Nov 26th and again on dec 26th but he pulled out and was not in there long- also he did not ejaculate. After that he put on a condom and we finished having sex each time. The condom was spermicidal. I have taken 4 tests- two early before period is late kinds-first response I took those on the 10th and 14th- they were negative. Then I took a digital walgreens brand one on the 22nd and one on the 26th they were also both negative. My breasts have been tender, the last week or two and also for the last two weeks I have been exhausted. I felt nauseous twice but did not throw up. Could I be pregnant? Or could this just be a thryoid problem? Normally we would not even worry about it being llate except for those two brief times we fooled around... We usually always use condoms this is the first unprotected sex we have had since I was off the pill. I stopped taking the pill almost 2 yrs ago. I should also mention I am bipolar and am on 4 different types of meds, two anti-depressants one anti-psychotic and one anti-convulsant. But I have been on the same combo and dose now for months... I am just really worried but I do have a gyn appointment next thursady for a regular pap smear test. Does anyone know what maybe going on here?