Hurt back of my leg (hamstring area) a few days ago. Huge black bruise now that covers half of the back of my thigh. Some pain of course.

The issue is this - I have a long flight to Europe in 6 days and am supposed to be doing a few days of hiking once there. Worried about possibility of blood clot on flight (just last week cardiologist told me to start wearing compression socks when I fly because my feet have started swelling) Obviously worried about inability to hike once I get there or making injury worse.

So should I got to an urgent care place today and try to get a referral for a medical imaging place to get an MRI or some imaging? Try to get in with my regular doc next week and then hope to get whatever he would suggest - even though I'd only be down to a few days before the long flight and may not be able to get tests and results back?

Would appreciate any advice on steps to take.