AITA for thinking my guy friend is sketchy and should reimburse me some medical expenses?

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Hi all! Throwaway so my real account doesn't get doxxed in case someone I know stumbles upon this post.

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A few weeks ago, I went out with a group of friends and drank extremely heavily. I woke up in a guy friend's bed ( aren't super close but are definitely friends) and he informed me we'd had sex the night before. I had zero real memory of this occurring. I had always thought he was cute, and though I hadn't ever actively considered sleeping with him I believed him when he said I was in to it and wanted it, even though I must have been super drunk because I've never blacked the point where I don't remember an ENTIRE block of time.

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I'm on birth control, but it failed and shortly after we had sex I had a positive pregnancy test. I then went to my OB/GYN and found out that I'd essentially had been pregnant and suffered a very early miscarriage. He'd be the father, as I hadn't had sex with anyone but him. I had to have my birth control device (IUD) changed out and several ultrasounds bc any IUD associated pregnancy is extremely risky. I later had very heavy vaginal bleeding as a result of the hormone changes, having the IUD changed out, etc and ended up in the ER. All of this resulted in about $1500 worth of medical bills. I brought this up to him and he wasn't keen on helping out.

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Reddit, AITA for even expecting him to contribute a small financial amount? AITA for thinking the way we had sex in the first place is super sketchy based on how drunk I must have been? A friend implied he'd essentially assaulted me and i dont know what to think. i appreciate any input!!!