BC pill

I’ve been on birth control for 3+ years now (the combined pill) and I also have severe constipation, meaning I only use the bathroom 1-2 times a week if that. However, since I refuse to take laxatives, that sometimes means when I finally do I use the bathroom 2-3 times in one day. Will that affect my pill? I stress enough about getting pregnant on the pill as is with perfect use. It’s never diarrhea unless I have the stomach virus, which is rare. TIA.