Signs of serious drug poisoning?

Hello, I don't really want to beat around the bush, I urgently need advice from someone outside!

Yesterday, I took ecstasy again (and some weed too), and then I had major problems. I had to throw up (which has happened to me before and isn't that bad in itself). I felt so unwell the whole time. I was extremely scared and panicked. I couldn't walk because I had no energy left and my vision kept fading. I sweated profusely and felt hot and cold at the same time. I almost fell asleep at the beginning of the trip—it was such an exhausting state…

But then I couldn't stay in bed any longer because my arms and especially my legs had started to cramp. I somehow got myself into a position that was somewhat bearable, and I was quite afraid of having a full-blown seizure. I also had several sharp pains in my stomach area, which really worried me.

I also had a complete loss of reality and was hallucinating a lot. I didn't really know what I was doing or what was happening and I can't remember much else. I do know, however, that I started taking the stuff yesterday afternoon and then took more a few times. I didn't finally fall asleep until around 7am.

What I also remember quite clearly is this chemical, metallic taste I had the whole time. It was so incredibly disgusting, I'd never had anything like it before. My vomit that afternoon was also completely blue and was just liquid, since I hadn't had anything in my stomach beforehand.

Today I felt a little better after waking up, I still have this afterglow and also had some diarrhea, everything was still blue

Should I be worried that this was one too many? I just want to know if I absolutely need to see a doctor. If it's not 100% necessary, I'd like to avoid it.

I also have to say that I realize this action has absolutely nothing to do with safe use; it's so irresponsible. I find this very uncomfortable, and I'll stay away from chemical drugs in the future because it really scares me after what happened. I don't need to be lectured about my behavior; I've learned my lesson and I just want to know how bad this is.

Thanks for reading!