Used? Plz help.

I went on a vacation to Cancun for my spring break with my parents and sister. I’m 18 so I’m legally allowed to drink in Mexico. My parents met this older couple their age and became friends and they live in Illinois. So they talked abt getting together after for a double date or whatever, that night I met their 17 year old son let’s call him Dave. He was funny and cute. But mainly funny. Very social. He was getting drinks somehow and stuff and we hit it off. The day after I met him he gave me his number and snap and told me to follow him on insta so I did. The last day for us he found me at the beach and hung out with me and my family and talked about hunger games and sports and school. Then that night I got drunk. Like wasted. I wanted to kiss him cuz why not and I thought he was cute and funny. We ended up kissing and there was a balcony on the top floor that we went too and his other friend lets call him James left to get a drink and we ended up making out and as he was on me kissing me he promised to call. I didn’t remember much after that until like 18 hours after I went to bed. I woke up and felt a little funny down there and texted him asking if he remembered what happened last night. It didn’t go through so I went on snap, nothing, and instagram wasn’t available anymore. He blocked me. I went though the whole day trying to put together what had happened. I remember being into it. And i am taking some responsibility for what happened that night. But I feel extremely used. And blind-sighted. Also I remember telling him to pull out so I know we had sex now. But I’m scared because i don’t think we used any other “protection”. After it happened i also remembering him saying “if you get pregnant you better abort that shit”. I feel like shit abt that. I would never get an abortion. And now I’m scared that I might get pregnant. The one thing is my mom is friends with his mom and has her number, do I leave it alone or what. I am struggling a lot. Please give me any advice you have.