My 2 cents
Hi Ranae,
I noticed your question and since no one has answered it, I will give you my 2 cents. This is strickly a lay person opinion now. But I have had knee pain and I would say any knee pain is not something to fool with. It can quickly get worse. Often dull aches are the beginning signs that something isn't right in there. Especally if it last for any length of time afterwards. I would look out for swelling and tenderness. If it continues see a Physical Therapist. Also when your working out,try not twisting it, at least until you have seen a P.T. and know what's causing the pain. Don't try to treat yourself. It is better to deal with it early so it doesn't set you back or cause more harm. They can give you exercies to strenghen it (even if you are weight training)and teach you how to take care of it so you can continue exercising. It will cost less to have it done now then to wait and need more Therepy later. Meanwhile when it does ace try putting ice on it for 15 minutes. A bag of frozen peas works great. Hope I don't scare you too much. I just know how hard it is to stay active when your knee is hurting. Good luck, and let me know if it gets better. Lora