Ibs? Switching bc pills? Pregnancy?

So...

Been on tri Estrella for a year and a half. Switch to Loryna for acne resolution, first month on Loryna period was heavy, second two months period was only one day long. Loryna has 4 placebos, so I assumed my body had to adjust. Beginning of this month I switched back to tri Estrella bc my anxiety was through the roof, and I had stomach pain daily as well as bowl movement issues. Since then I have been told by the doctor I have a gluten intolerance. My stomach is bloated and hurts ever since starting Loryna, almost 4 months ago now.

Should I be worried about pregnancy since I only bled 1 day for 2 months? Can birth control react poorly with your body and cause stomach problems? Advice please! I’ve taken numerous tests throughout the months that have came back negative, but this stomach cramping and abdominal bloating is worrying me...

** stomach pain feels as if I am constantly blowing out. Have talked with my doctor about possibly having ibs** but unsure if bc triggered this?