Acne on one cheek (left)

It came and went for a while - I am not on birth control because I have Chronic DVT (since the age of 16, I have a blood disorder.) I am 24 now. I workout regularly, I don’t eat or drink dairy, I have a clean diet. I have bad acne that is not raised but they are red marks and scars. Nothing helps it except sitting in the sun or an occasional tanning bed session (so bad, I know!) thank goodness it covers well with minimal makeup... but I want to be confident with no makeup! I don’t use cheap foundations, so I feel that is not an issue, plus I work sales, I have to look presentable, so the “no makeup” option is out of the question - HELP!