Help is this considered sexual assault

Hi, I’m an 18F attending uni internationally in the UK. This has been eating me alive because I received so many different blames and answers to this. Basically, I moved here in august. Being homeschooled my whole life, the clubbing / party thing was really new to me.

I (think) I’ve been assaulted three times. I say think, because I’ve never reported them since some people told me it’s not worth reporting

My first experience was my first night at a flat party. I met a guy who was friends with my flatmates. He was really nice and neutral toward me, not creepy or flirty. He wanted to do shots, so he gave me 3 to “test my limit” but he ended up doing one. Next thing I know, I wake up in the ambulance because they said I hit my head really hard. I was found naked and unconscious in his flat. I know this obviously sounds like assault, but here’s the thing. He called the ambulance himself, seemed really worried for me, and told me that I consented and said yes when he asked if I wanted to have sex. I have no memory of this, being blackout drunk and was still a virgin. He was really drunk too, but not as drunk as me.

Second experience was with another guy who lives in my building. He wanted to talk to me about homework and get to know me as a fellow international student himself. He said we’ll take a walk on campus, but changed his mind and convinced me to go with him to get food in town. So we get food and walk back to the bus stop around 10pm. He asks to kiss me and I hesitantly agree. He starts kissing me but he begins to put his hands down my pants to squeeze my ass in public. We finally get the bus, and he follows me to my floor and goes into my kitchen. He keeps kissing and puts his hand inside my underwear and tries to rip off my top, shoving his tongue down my throat. I kept laughing cuz I do this when I’m nervous and kept telling him I’m tired and I need to go to bed. He keeps begging me to show him my room and I’m getting scared. He eventually leaves, however he doesn’t think he did anything wrong and kept speaking to me like normal every day from then on.

Third experience would be on Halloween a week later. I’m at a Halloween party with my friends and they want to leave. I stay to talk to a girl and she says she will walk me home because I am drunk. She ends up disappearing for the night. A guy approached me and scared off all the weirdos hitting on me, and he seems to be the only sober guy there. He was absolutely not drunk. He starts to walk me up but claims he needs to go pee in his room. It’s raining so he brings me inside and I tell him I’ll wait outside his door but he insists on showing me his cool collectibles in his room. I go in and wait and he comes out of the bathroom but locks his his bedroom door. He starts to kiss me and I start laughing and saying I want to go home. He says “5 more min” and 5 min passes where I let him kiss me. He then says it’s raining too hard. I am drunk and the campus is huge so I do not know how to get back on my own. My phone is dead. I refuse to take off my costume even though he gets mostly naked. He pins me to the bed and turns out the light and I tell him I don’t want to have sex just kiss. He left 9 hickeys on my neck and some were bleeding. They hurt and I did not ask for hickeys. I feel his penis suddenly insert me and I’m in shock as I told him no to sex 5 times. I lie there and pretend to enjoy it and he eventually falls asleep. I found out hes really popular on social media and it made me feel so small and like I would get harrassed or accused of lying. I know this was a long time ago but I still have nightmares and confused as some people say it isn’t wrong if I was too scared to say no because they thought I wanted it