I am not sure if it is cystitis or maybe something else but it started a day after sex and I felt a bit tender inside. I have this feeling of needing to wee but can't and when I do its a mild burning pain inside or like I need to squeeze more to wee.I have the coil fitted and at first though dh might of moved it as I had a pinching feeling inside that's now eased but I am trouble weeing.