Me and my now ex were having unprotected intercourse, using only "pullout method". Well my period after that was very light, pinkish/brown color, and only lasted 3 days. This is odd for me because normally I bleed heavily, red and 5-7 days, Then my next bleeding came 1 week to soon. It lasted 3 days then stopped. I went to the restroom today and wiped had a little blood and that was it. I took a test after the first strange period but it came back negative. Could it be wrong and I still be pregnant?

Since your second period was also irregular for you, try another test. Be sure to follow the directions carefully. It may just be cycles are off a bit, but of course pregnancy is a possibility.