What Causes Mild Cramping,pink Discharge And Bloated Feel Despite Taking Mononessa?

Hi, I have been taking mononessa bc pill for a month and a half now. I m on my second pack. At the end of my first pack, I bled for 3 days of my inactive pills. Heard that was normal to have a shorter light period for first time and even for the first few months. I m on my 3rd week of pills this second month and have been cramping everyday the last week and today I had discharge with a slight pinkish/brown tint to it. I have also had a gassy feel today. 8 days ago I had unprotected sex. Do the cramps mean I am pregnant? Or could this be normal for bc?