Hello, I am 26 years old female who has very irregular periods or the past couple years. My last period was sometime in November of 2017. I have had off an on symptoms of getting my period, but no period. About 2 months ago, I had sex with my boyfriend and the condom came off inside of me. Since then, I have taken 4 at home preganancy tests to make sure and they have all come back negative. Today I did have very light spotting mostly this morning. What are the chances I am pregnant?