My friend 33M unfriended me 28F and I don't know what to do. I'd appreciate any advice

I'll start by saying that I'm a 28F, and right now, I'm not an easy person to deal with because of my mental health.

I've been a bigger girl since I was 17, and after 11 years of struggling, I finally decided to get help with my eating disorder. Unfortunately, as a result, I've developed another eating disorder. I'm now scared to eat, and when I do manage to eat something, I don't look forward to it. I cry and feel guilty at the thought of eating. My friend of 15 years has been begging me to eat and has been genuinely worried about me.

This whole week has been hellish. I've been picking fights with him, nitpicking at him, and generally taking my frustration out on him. He kept asking me if I was on my period and insisting that something was wrong. Eventually, we got into another argument.

I told him it wasn't that, and we both kept insisting that we were right. Unfortunately, it ended with us insulting each other. He called me a lost cause, and I called him arrogant. Eventually, though, we made up and tried to move on from it.

While I was out shopping, another friend video-called me and noticed that I was upset. I told her what had happened, and she got involved and messaged him, which unfortunately caused even more issues between us. He blocked her and unfriended me.

Within those 24 hours, I started bleeding. I hadn't realised my period was coming because my cycles are irregular, but for some reason, my friend has always been surprisingly good at predicting when it's about to happen.

I feel awful because, looking back, I should have considered that my hormones might have been affecting me. I started crying over something that happened in 2017 and picking fights with him over it, which is completely unlike how I would normally react to something so old.

After that, I went to the gym and then to the doctor. I couldn't sleep for two days because I was having horrible stomach pain. No matter what position I tried to lie in, I was still in pain and crying. Eventually, I vomited on the bathroom floor and just broke down crying.

I was so scared, and everything seemed to hit me at once: the arguments, the lack of energy, the mental exhaustion, and my eating disorder. I genuinely felt like I was going crazy.

There are also things that I'm terrible at explaining because I'm autistic, so please forgive me if some parts of this don't come across clearly or if something seems confusing. I'm not trying to excuse my behaviour; I'm just trying to explain what was happening to me at the time. I'm genuinely happy to receive advice and perspective.

I also want to make it clear that my friend (33M) isn't a bad person. I genuinely hope that we can work through this and speak again. He's my best friend, and I care about him very deeply. I know that I have things to apologise for, and I intend to apologise to him when we're able to talk again.