can a underripe banana nake you sick?

[AwayWithTheFaries]

went shopping today and bought some bananas ds had one and was sick about 1 1 1/12 hours later
the bananas were quite hard and it was hard to peel and it looks like that was what was brought up
hes been grumpy for a couple of days and had a cold
he hasnt been sick since

It can give you stomach cramps, I never eat green bananas they kill me.

ds is 4.8

Both ds and myself only like bananas when they are slightly under ripe (personally i can only eat them if the skin is still slightly green or they make me gag) and have never had a problem though I know most people usually comment its a wonder they don't upset our stomachs.

well that's strange why he was sick then who knows maybe its a bug but he hasn't got a temp and no dhiorriah

Ds threw up on tuesday night in the middle of the night. Only once and he had no fever etc either. Was fine the next day. And he'd definately not had my under ripe bananas either!

My best friends dd did same thing last week too so don't know if there is some strange bug doing the rounds.