Hello There. I Fell At Home About A Month Ago,

hello there. I fell at home about a month ago, I'm 28, active, healthy. My knee has steadily gotten unbearable to work with. Especially when sitting for awhile and standing. My knee locks up and I can't put weight on it. It is very unstable and I cannot fully extend my knee, no matter the circumstance. I have always been hyperflexible so this is odd for me. Not much for noticeable swelling but intense pain and limping until I've been on my feet for awhile. Curious if I've torn something. I don't currently have health insurance so I'm looking for a home remedy