Bleeding?

So I’m on birth control (loryna) and my periods are regular and I never bleed or spot outside the time I’m supposed to. But yesterday randomly I started bleeding like regular period bleeding..this hasn’t happened in a long time, I’ve been on a weight loss journey recently and lost almost 10 lbs could my eating habits do that? Make me bleed randomly? I eat healthier and more protein and less sugar all that good stuff but idk if that can do anything with my cycles…