Is Food Poisoning The Reason For Stomach Pain With Fever?

I don t know where you are based but I m in the UK and it s 4:30am. My symptoms started at 11:00pm last night with a headache, I fell asleep for about an hour then woke up with strong stomach pains. For about 1 1/2 hours I tossed and turned but the symptoms remained. My stomach was bloated and making noises I also had a fever too, feeling very cold. I then went to the toilet and tried to make myself sick with only a little coming up. I then went back to bed and 1/2 hour later went back to the toilet and was heavily sick, I felt better. I went back to bed and about an hour later my symptoms were back, I tried to go for a poo and was sick again. I was feeling very light headed and slightly passed out when sick this time around, as my head fell forwards and the rim of the toilet was supporting it. I now feel better again but the pains in my stomach still remain and I m slightly feverish. I think it is food poisoning but I am assuming. I am male and 35 years old. Thank you, Ashley