Cramps

I rarely have cramps at all not even before my period but im 8 days away from my period ive been slightly cramping the last 2 days doesbt last very long makes me thing my periods coming. My bf and i have sex everyday since october 3rd except maybe 4 days but even thro my last period we had sex unprotected and hes not pulled out we are TTC we tried while i was ovulating even before my period and nothing im scared that it may not happen this time either