Really weird cramp above my hip bone?

Maggi

I'm 19+4 today and at work currently. (Definitely not a physically strenuous job) and for probably 20 minutes now I have had a cramp above my left pelvic bone. I've never had this before and it's really uncomfortable. It fades for a few minutes and then comes back worse.

Is this normal? I've heard of legs and such cramping. But this is such an odd place!