Sugar-free but using Stevia

Hey, so I’ve been on this health journey for a while, abt a year or two. I started just cause I was a perfect weight but ate like crap and when I started I had just gotten sick, my family thought I was anemic but all the doctors could get from blood tests was that it just showed implication of a virus they couldn’t really define. I lost my appetite and then my period. It’s been a long journey to real health and getting my period back (just got it last week! 😁). No matter how well I eat though, whenever I eat Stevia (which is only occasionally bc I take my ‘sugar free’ thing seriously) my stomach churns in a way it only does when I have PMS, anyone else have this issue?

(Also, unrelated but does anyone else love “Schitt’s Creek?”)