For Two Days I've Been Taking Coq10 With Bioperine And

For two days I've been taking coq10 with bioperine and a gain weight supplement. Tonight im noticing a crawling senaation on the left side of my stomach like something is moving around every minute or so. What could that be. I have also experience horrible stomach cramps and an nauseating lightheaded feeling when making a bowel movement. It goes from constipation form to diarrhea form when it passes