Hello, I was wondering if anyone could help me find out what the father of my unborn child is on...

He got arrested yesterday afternoon and they found more then weed on him. ( which he got charged for ) I asked a cop what that charge meant and he said that it was a drug possession of either meth or cocaine.. Which made everything line up in front of me... Over the past few months my ex has been really abusive, violent, he was lying all the time, hiding things from me, disappearing for hours on end then showing back up high, he was aggressive, losing a lot of weight really fast, and constantly forcing sex... When i first got with him in January he was nothing like that. I have also found crack pipes in my apartment that not until last night I knew were what they were. What does it sound like he could possibly be on?....