I am 20 days late of my period, in 15 days late i had spotting and last for 2 days, it was just a tiny tiny drop to my panty and that was it and light red every time i wipe after using the bathroom and i had it for 3 days. Now i feel sometimes carmping of my tummy and lot of gas. It could possible i am pregnant? I took 3 times home test but all negative.