Still no AF!

I am 2 days late for my period (i am usually never late, its like clockwork). I took a equate brand pregnancy test and it was negative but i also didn't use first morning urine. I am extremely bloated and have had an appetite and my breasts have been sore and tender for 5 days. My husband and i use the pull out method and have successfully for 4 years. On day AF was due i had some spotting that lasted maybe an hour but it was only when i wiped. Is there anyway i could be pregnant?