Hi. I have a regular period. My last period was 24/12/2013. My period was 10 days late. I started my period the 4th Feb. My periods was never this late. I had unproved sex, but he pulled out before ejaculating. In the 10 days I had a lot of headaches ,nausea, when I started with my periods (2 day now) the nausea was lighter and headaches as not that much. Now I'm struggling with very bad BACKPAIN. 7 days after missing my period I did a blood test and was negative. Was it to early for the test ? I never missed a period 10 days before. I don't drink or did anything for my periods to be delayed.

You did not say how old you are? But...

It just happens sometimes, it sounds like you have your period. They can be late sometimes, even miss a month now and then, it is just a common thing in women.

The back ache is most likely from the late period and this cycle is going to be harder and maybe more painful.

I will assume you mean "unprotected" not "unproved" as for as pulling out, does not help much, there are still sperm in the early fluids, so it is better than doing nothing, but not very effective

Assuming this is only spotting, not a real period, then pregnancy could be possible, but by what you describe, you are merely using wrong words,

The period is not missed, just late. *assuming this is a period) in fact, you do not even start testing till period is 14 days late.

If this is just regular period, you can wait to see what happens next month