Pulled thigh muscle

I’m a 40 year old woman. Thursday night I was stepping off of the train and think I pulled a muscle or sprained it maybe. I’m only 5 foot 2 and the height of the train in comparison to the ground was pretty high up. I’m also fairly sedentary which doesn’t help. Anyway, I’m in a lot of pain still on day 3. It’s the side of my hip, stretching from the butt to the front of my thigh. I’ve been icing it and taking ibuprofen. I limp when I walk. I live on the 4th floor with no elevator so limiting stairs. I don’t know if walking will help or make it worse? Do I stay in bed? Elevate my legs? I have a regular physical on Tuesday but this is a new PCP and it’s going to be awkward showing up and having this fun surprise.