Will my knee be okay?

ABout 2 months ago I partially dislocated my knee cap, and the whole knee locked as well. It went into place after I screamed and shook my leg XD But the doctor said it was because my hips are too loose and it's made me develop pigeon feet, which has worn down the cartiledge and makes my knee easy to slip in and out of place. It hurts and feels really horrible when I slowly bend down, cross my legs, sit on my legs or slowly stand up. And I have to slowly stand up or bend down because the doctor said it was safer that way, sitting or standin up quickly could apparently put it outta place again. It really aches sometimes and is always clicking especially when I go up the stairs :( Will it go away, and is there a chance it'll go back out of place again? IT'S SO PAINFUL WHEN IT DID LAST TIME! :'( I'm only 13. The good side is I'd be good at gymnastics becasue of my hips being loose or somethin ;)