swollen calyx

Found these under the canopy of a stressed plant 4 weeks flower. I see the pistils so I know it’s female but is it something to be worried about. Does it mean it’s been pollinated somehow?

This is my first grow so you could say I’m kind of a noob at this but having said that I’ve grown a beautiful plant that is healthy and thriving without ever any problems until this point. I’m almost 5 weeks into flowering and these all literally popped up that I noticed almost all over night...