Me, me, me. I was much younger then and just went to get up from a chair at work. Got half up and thought someone had knifed me (sigh). ICE is your friend. I also believe in chiropractors as that is the only doctor who could get me out of trouble. Ice, ice, ice will take the pain away. Specific exercises will help.
BTW, it has nothing to do with age!
I do feel your pain!!!