I'm not sure of your age but after a long amateur career (and a bit higher) in sports, injuries are a fact of life. Also a fact of life is that when you have an injury, unless you want to go private at considerable expense, if you can run and manage to ignore it then I wouldn't bother having it looked at. You won't get a scan in all probability, you will be told to rest and come back If it gets worse. I know there will be many on here who will advise that you get it seen but unless it's bad (and it certainly doesn't sound it) you will get pain management and that's it, and you don't need any of that from your post.
If you've got minor ligament damage, then you'll find it very difficult to get your leg moving in the morning and maybe some swelling and pain. There's no operation, no physio required, you just have to avoid making it worse. If you had anything worse then you wouldn't be running around. If you had any damage around the knee you'd have swelling and bruising etc.
The fact of the matter is if it isn't broken or torn then it's RICE. If it feels like you need to rest it then do so, if it doesn't then carry on. Footballers who playbteice a week and train are rarely pain free but there's nothing you can do apart from either play on or rest up and that choice is yours.
If you're recovering from a serious injury or have persistent muscle injuries the I thoroughly recommend a sports physio. Doesn't sound like you do though so save your money.
Crack on...