Only you know how much pain you are in. Also, how much function you have lost.
If it is only minimal pain and function loss (ie can do everything, but have some discomfort) then you may want to just wait it out.
However, if you are having significant pain, and function loss, then you may need to see a physician for an evaluation.
In young adults, falls on the point of the shoulder usually affect the ACJ (acromioclavicular joint). Though these can be painful, they are usually not treated surgically (unless there is a fracture in the ACJ). Even with high performance throwing athletes, there is still controversy as to the optimal treatment for these.
However, in the older population, falls onto the shoulder can result in proximal humeral fractures.
If it was a fall on an outstretched hand or onto the elbow, resulting in shoulder pain, one has to also rule out rotator cuff tears and possible shoulder dislocations.
So, there are a lot of things that can happen when the shoulder is injured. Again, only you know how much the shoulder hurts and your resulting loss of function.