Help how do you respond?? Sorry it’s so long

Okay, so my ex is a sociopath. He took advantage of me when I was fighting my mental demons, (ie. I spent time in a mental hospital due to attempted suicide. This was over 5 years ago) he brought me through it, kept me away from my friends and family. Finally I got through to an old long time friend and she convinced me to take a vacation away from him and I finally was able to break away after 3 long debilitating years.

The only reason he still has the ability to contact me is because we shared a car loan together. After threatening to file bankruptcy (he essentially forced me into buying the vehicle to essentially stay in control or stay in my life. He admitted to it when I tried breaking up with him the first time.) he had me paying for everything, 2 car loans, 2 insurances, his tuition, rent, utilities. I even took care of both of our dogs and the groceries. I didn’t have a phone for a long time with data and texting because of not being able to afford it, but I paid for his. I was incredibly controlled and had a really hard time making any decisions for myself. Fast forward 2 years from our break up, I’m married to the love of my life and pregnant!

While I had the car I allowed him to have my phone number. But then when he took the car back he started harassing me as he had no reason to contact me. I blocked his number and then he started having his girlfriend and his other friends call me. Then he had the people that I didn’t block message me in fb as well. I blocked those people called ATT and changed my number. I thought about getting a no contact order.

The last week I had the car I got a parking ticket. I didn’t know as the ticket blew away, and I didn’t get any kind of letter stating I needed to pay a ticket. He emailed me, and tried to get me to give him my new number to talk about the parking ticket. He found a letter he claimed. I asked for a photo he couldn’t find the letter, (convenient) and asked again for my number. I ignored him and said I’d call the city I live in to ask about it as I hadn’t gotten any letters from them. I checked and I did in fact have a parking ticket from May, and I emailed him back and said that I’d pay it. He continues to email me every few days asking for my number and to call him.

After this is paid he will have no reason to contact me and I plan to block him. My husband said to continue to ignore it and when we get paid and pay it, to email him saying that it’s been paid and then block his email. I always feel like I am required to give him an explanation. I ignored him when I first dropped the car off, before I blocked him. He harassed the living daylights out of me. He even asked me if I was safe, if I was okay, and what was wrong with me I “never ignore him”

Should I just leave it as is and block him, or should I email him and tell him it’s not necessary for him to contact me once it’s been paid and then block him? Should I maybe take more precautions and get a restraining order or something?

Seems like a simple question but I’m worried he’s going to come up here and he’s going to try to confront me for blocking him. He’s tried once before but we were out of town. He does have my address as our bank that we have the loan through did not listen the first time I asked them not to reveal my personal information to him.

Advice?