There aren't that many common food poisoning conditions that cause you to feel ill within an hour or so of eating, and those that do tend to be toxin-related, resulting in vomiting rather than diarrhoea.
Diarrhoea and vomiting where you feel like the world's ending but which resolves in around 48 hours sounds more like norovirus - if so, you can blame being in the proximity of someone or something infective around 24 to 48 hours before feeling ill. It can be foodborne but airborne norovirus aerosols are incredibly infective and you could pick it up in any communal environment, including shops. People will be infectious for several hours before feeling ill so a source can be walking around next to you.
If it's something more serious, like salmonella, then your GP can arrange for some testing to confirm this. However, if it is this then it takes at least eight hours and often longer, to start feeling unwell so it is unlikely to be from the meal out.
I wouldn't get too hung up on who ate what with just one case of illness. Bugs don't behave in such absolute ways!
Diarrhoea and vomiting where you feel like the world's ending but which resolves in around 48 hours sounds more like norovirus - if so, you can blame being in the proximity of someone or something infective around 24 to 48 hours before feeling ill. It can be foodborne but airborne norovirus aerosols are incredibly infective and you could pick it up in any communal environment, including shops. People will be infectious for several hours before feeling ill so a source can be walking around next to you.
If it's something more serious, like salmonella, then your GP can arrange for some testing to confirm this. However, if it is this then it takes at least eight hours and often longer, to start feeling unwell so it is unlikely to be from the meal out.
I wouldn't get too hung up on who ate what with just one case of illness. Bugs don't behave in such absolute ways!