TW: SA I think I was raped today and I don’t know what to do

Went on a date with an older guy that I met at the grocery store. We had two dates before this and he was super nice and gentlemanly. Today, my intuition was screaming at me and I couldn’t figure out why. I pushed through it and I wish I hadn’t. We had lunch and it was lovely. Then, he asked to go on a walk down this really pretty, well decorated path. It was relatively residential, so I figured it was fine. However, it got more and more secluded until there was a balcony over this river. He pushed against me and started pulling up my dress. I laughed him off and said we were in public and went to sit on the bench. He tried to finger me again and was really insistent, so I let him. Then he tried to go down on me and I said no. He continued to finger me and then tried to go down on me again. When I said no, he yelled at me to “sit the fuck back and stay still” over and over. I let him do it and then he pushed my neck into the bench backwards and choked my blood flow until I passed out. He bit the inside of my thighs so hard I have big mouth shaped bruise marks. When I came back to he was still fingering me and I panicked and yelled at him to stop and he did. He came around and started massaging my shoulders telling me to breathe and that everything was ok. I told him I had to go see my mom soon and he said he needed to be inside me before we left. He told me to bend over and pushed my back down. I let him even though I kept telling him we needed to go. At that point I just felt strange and uncomfortable. He fucked me for a min and I finally told him I needed to leave. I was very shaken and confused. I felt like I was assaulted but at no point did I fight or scream. We had talked about sexual stuff over text and I insinuated I wanted it eventually, and I got off while he fingered me. I feel gross and shaken and guilty. Update: after everyone’s comments I decided to go to the police department. They took a report and they’re driving me to the ER right now for a rape kit. The biggest push was that when he choked me out, he sternum rubbed me and they said that means he knew what to do and had probably done it before. Thanks to everyone for your kind words and urging me ❤️