Pain when aroused 🤷🏼‍♀️

For some reason when I'm turned on, it feels like my vagina's cramping up super intensely. It's not every time, but I haven't found any pattern for it either. Currently seeing a gynecologist and a pelvic physiotherapist (for this and pain during intercourse).
Any of you experienced this and know what it is or have suggestions on how to help "fix" it?