The allergies topic is always quiet so posting here
TMI and don't read if you're eating (I've NC!)
For my birthday a friend got me a piece of cake from a postal bakery. Almost immediately after I had severe stomach cramps, had to run to the bathroom and had bad diarrhoea
Blamed something in the cake and carried on as normal - I had this cake before and had an upset stomach but didn't link it as we had a takeaway the same night
In the meantime I've eaten supermarket puddings, biscuits, the odd cream cake etc, all fine
Today I got a millionaire brownie from my local cake shop, I've had cake from there probably monthly and no issues
Eaten it and within 20 mins, stomach cramps started, and it's like my stomach just needs to empty 
WTF is doing it?! I do eat vegetables
but probably 1-2 times a week I'll have a biscuit or egg custard tart or something and I would like this not to happen again