Getting Better or Getting Worse
One concept that is frequently talked about is the idea of injury stagnation or injury limbo. The injury in question doesn't appear to be getting better or worse. This idea is a dangerous one, with long term consequences. Let's look at an example.
Suppose you are shoveling snow and you back suddenly hurts. A week or two goes by and it doesn't quite hurt as much as it did in the beginning. You assume the injury is taking a natural course of healing and you will be pain free in a couple weeks. Another couple weeks pass and the pain is the same no better or worse. So you decide to just keep waiting. A year passes and you now live with this pain like it is an irritating roommate. Always there, always painful and irritating. What you haven't noticed is how you have changed in that year. Your posture is worse, your sleep is worse and you are less likely to go out. Over a year your brain was sending signals to you. "Hunch over a little its more comfortable for our pain. Hey wake up we are in pain. I don't want to go out because I remember being in pain last time." Over time you posture has caused soft tissue to contract and shorten, encouraging further bad posture.
I hope you can read that example and realize that there is no such thing as a stagnating injury. You are either getting better or getting worse. Don't be afraid to spend some money investing in your health. I have patients who have delayed getting help for years. As a consequence of waiting their therapy takes a lot more time and effort to reach resolution. It is much more expensive to wait.