Im no expert but looks like could have been badly stressed.Can see a little nute burn.If it was just 1 or 2 and thats the only plant you had id pick them off and try to see it through but it looks way beyond that.IMO it has to go no matter what,Its probably already pollinated itself.Is it my eyesight or have you got bugs aswell?I could be wrong,il leave it to the good folk on here who are alot more experienced than me to give you a definitive diagnosis.