Sign effects or pregnancy??

I’ve been on Aviane consistently the past month, and have been sexually active also. I’ve noticed that I’ve had slight cramping recently and a loss of appetite and slight depressive moods. I was switched to another brand (levonorgestrel and ethinyl estradiol, 3 month pack) and have since had worse sign effects of the ones I mentioned earlier. I havent had any nausea, headaches, or breast tenderness. I feel like I’ve been consistent enough to avoid pregnancy, but I’m still paranoid. Any thoughts?? (These symptoms started about 2-3 weeks ago)