Right, cash game live.
Blinds are £1 and £1 but 2 peeps raised blind and it's £4 to call.
You are dealt

and call. (first position)
Flop is

and it's checked all round (5 in the pot).
Turn is

and again checked all round.
River is

and you bet £5 and folded all round to the last person who calls the £5 and raises the pot.
What do you do, and more importantly why?