X-ray soon, on my period, what should I do?!?

I'm not sure if it will because it's going to be an x-ray for a bone. I'm a runner and I'm having a huge amount of pain on my left iliac crest. I'm thinking it's an avulsion fracture, I'm going to urgent care later today and I'm pretty sure they're going to take an x-ray, well conveniently, I'm on my period. I HATE wearing pads because it feels like a diaper and i don't enjoy sitting in a puddle of my blood, anyways, will it show up a bunch because don't they change the lighting for if it's soft tissue as compared to bone? It'll probably be pretty awkward to just see a tampon just chilling there.. Should I just tough it out and wear a pad to not be embarrassed or should I just wear a tampon and deal with that thing just chillin in the x-ray when the doctor's looking at it?