My normal period is 7 days and last time I had one like that was 11/19/13.. I.started having sex with my fiancée dec 17 on everyday then on the 22-25 I was bleeding but it definitely wasn't a lot I wouldn't have to change my pad for a.few hrs . And it wasn't bright bright red after that I've been nauseous here and there no throwing up tired.been going to the bathroom a little more than usual and back.pain . The very end of dec beginning of January I took a test came back negative. Still been having symptoms. According to my period tracker app it says I'm 29 days late and I'd be 8weeks by now. I took a test two days ago and it came back negative. I have yet to get a period(suppose to start 1/14 and since yesterday I been experiencing a sore tight feeling in my abdomen when I stretch or bend and when I press on my lower abdomen where I have an inscision from my ectopic it feels a little hard and sore. Could I be pregnant or not?(symptoms include tired a lot during the day , hungry , peeing more than usual, nausea here and there , back pain, light headed and dizzy every so often and that sore feeling in my abdomen)

Yes, you could be pregnant. Are you? No one online can tell you. There are 4 ways to determine pregnancy; urine test, blood test, ultrasound in later pregnancy, and giving birth.

Have you had a blood test done yet?

Are you doing the pregnancy tests with the first urine of the morning as soon as you wake up ?

If not, do that.

Some women get a false negative even into 3rd or 4th month sometimes.

If you do not get this period, then you need to go in for a blood test at your doctor