I took dietary supplements and then I had a bloody stool, is this bad?

I took adacor which is a dietary supplement that speeds up my metabolism and I also took nitrous oxide and also a protein shake mix, afterward my stomach was hurting and in doing the restroom I had a bloody stool, I would like to know if this is bad and if I should seek medical help, or if this is common as my body gets used to the dietary supplements. Thank you for responding.