Combination birth control pill and lighter periods

This birth control made me have headaches, nausea, and very decreased sex drive, will be switching back to sprintec.

I had one day of breakthrough bleeding, which was nice. At about day 9, I had sudden intense cramping, and I thought it was my ovary. Still haven't confirmed this, but I have not experienced that until I started the pill. I had cramps for the 6 weeks I was on it, and many days I was nauseous. I had a headache everyday, but I thought I could handle these physical symptoms since I felt it improved my mood some days. However, after having my first period on the pill (longer than usual, bad cramps, nausea), my mood dropped and I got very suicidal and had to stop taking the pill.

I never know when I'm just "overreacting" or when it's the effect of birth control. However, depending on the time of day I take my birth control, I may feel headache or nausea symptoms and it tends to be pretty obviously connected to the birth control (i.e definitely not because of anything else).