My abusive ex is Stalking me. I found the tracker. What's Next?

I just found out i'm being stalked by my ex. Now I feel like i'm being watched from every angle, and I dont know what steps to take next.

Back Story

He went to jail for 8 months for breaking into my home a few minutes after I broke up with him. Charged with r*pe/battery/ false imprisonment, all while I was pregnant with our now 2 year old daughter.

With court hearings pending, upon his release he met our daughter for the first time. His father had just died. I believed his promises and let him back in.

About a week after his release, he started the jealous accusations and taking my phone again.

He wanted to have sex, I didnt. So he stood on my neck and stomped my head while I laid in bed. Later, he punched me to the ground in broad daylight as he held our baby. An hour later the neighbors were calling the ambulance, as i was covered in blood from a single blow to the eye.

He fled, and moved about 90 minutes away going from one sober living home to the next. He has a 10 oclock curfew but he still makes time to pop up on me unnanounced.

He started popping up so much that I switched to another job location, and he let me know... he knew.

He showed up at the grocery store, as i was walking to my car, grabbed me from behind with one arm around my neck and snatched my phone. I had to run into the store behind the register to get away and call the police, but he got away.

Sometimes he shows up and I play nice out of fear, then the act goes on so long that being with him becomes my reality again, until I get another wake up call that this person is dangerous and theres no limits to what he could do.

He has told me that he is watching and tracking me several times. I remember the first time he was on the phone telling me multiple things I was doing in my living room. He laughed as i panicked. But he always insisted that they he was just joking around, making good guesses. I searched tirelessly, but never had proof until now.

Now that I have this, my mind is all over the place about how exposed Ive been, my children being exposed. Ive never been with anyone else since ive known him, but we have said nasty things about him and discussed my plans to escape..

I put the tracker back in the spot it was in until I figure this all out. I dont want him to get suspicious and come after me.

Im thinking I should call the police, and make the report at my job since he could see me going to the police station. Maybe I should send pictures to the victims advocate that took pictures of my face after I went to the hospital for the event he was never charged for. Once I report it I have to do something about him because hes going to find out and I fear his reaction. We still speak/argue every other day.

He calls and texts repeatedly when I leave the house, especially when i'm not on my regular routes. Then the accusations, questioning, and calling me a whore texts flood in. In between that hes sending money I didnt ask for, sending what songs hes listening to, asking about our daughter, and occasionally trying to flirt, tell me he's missing me and ask for sex. Im a nervous, confused wreck. What would be the best way to handle this?