I am on the birth-control Tri-Cyclen and during the first week I forgot to take two of the active pills and was sexually active during that week. I then continued on to get discharged that was dark or blood but then continued to turn into brighter red blood. I’m assuming that I’m on my period because I’m getting symptoms like cramps but I was wondering what are the chances of being pregnant and when I should do a home test to check if I am pregnant