Talk to Internal Medicine on Question Regarding Creatine Supplements

Hello, I have started to take creatine supplements, I haven't gotten sick or felt pain (2 months). My parents are telling me to not take the supplements as they are harmful for you, but I read from many places that it is debunked and there isn't any issue, but it is not recommended for kidney patients. Now they are telling me to take a urine test or go to a doctor and get their confirmation that creatine is okay to take, I am 16 years old and go to the gym, to push my body to its limits without taking steroids i am using creatine (and to build muscle more easily). I am not a kidney patient, I have chronic hemorroids though, and I think I'm lactose intolerant. I am overweight.