Food poisoning.

So last night we had some prawns my bestfriend and I and we stopped eating them as they were weird. Anyway I started to feel really sick in the middle of the night couldn't move much, had to go to the toilet about 5 times.   

Anyway time passed and I was bout to go to toilet again and I passed out then proceeded to knock myself out while collapsing. Long story short was take to hospital in ambulance but no one has told me what the cause could be... Does anyone idk with common knowledge or a doctor willing to actually answer me know if it's linked to poisoning or if I just collapsed and happened to feel sick