Period and pregnancy???

Jennifer
My question is the last 3 months my period has been off a little well the last 2 months I was having unprotected sex for 3 months. So in June my period came On the 19th and I only spotted one time one day then in July it was 27th and I spotted on and off lightly for 3 days. I took a pregnancy test and it came up negative. My period normally is heavy for 2 days and the last day it's spotting. Anyone else ever go through this??