Really bummed and in pain

Im am so sad I was poling lastnight and felt a pop in my knee. My knees already have a few issues. So I forget sometimes I have to take it easy and pay attention to how my knees feel. So anywho I woke up and went about my day, than all a sudden I feel stiffness and pain. Look down and my knee is swelled and I also have a some fluid. Not sure how much. Have any of you other ladies had this problem? Or have bad knees and have found ways to cope? Im trying to lose weight and learn my poling. Now I have to sit and do nothing. I feel defeated because I was actually making progress and getting stronger. And say I have to have knee surgery later down the road will I still be able to pole?