NEED SOME ADVICE

I have a five year old that was diagnosed with ADD when he was an early four. He also has some sensory disorders and an occupational therapist works with him a couple hours a week at the school.  He is on adderall (adderrall) xr and a low dose of seroquel at night.

He has just started taking BM's (bowel movements) in the bathtub and also peeing just whereever he wants. There is no remorse and sometimes he laughs.

Any suggestions on what i should do. We are not due back to the doctor for another four months. I was not sure if I should go ahead and make him appt or not.

I was just wondering on how to deal with the situation and any advice would be great at this point