Spotting but no period

Saga

Me and my hubby are ttc. My periods are irregular the last 2 months i been spotting really light not going on my underwear just finding out when i wipe. Last 2 days i been feeling sick at random times but i cant say for sure if its pregnancy or not because im sick alot of the time from not eating. (Not starving myself just my body doesnt always tell me im hungry) anyway my boobs been hurting having many cramps we did it the 1st and the 4th of july. I got negs on pregnancy tests but idk could i be i hope