I would really consider returning to play basketball very carefully - and as you said, a ball in the head wouldnt normally give you problems, but it does now.

I am not an expert (and I dont know you or your medical records), but if it was me, I would wait until I have been free of symptons for a long time (years), and perhaps I wouldnt return.

I have had problems with PCS and concussions for more than 1½ year now, and I wish I would have taken it seriously from the start....

If you rest, dont stress (easy to say - i know), eat healthy, take vitamins (especially fish oil), have a good sleeping pattern, doing things you like, spend time with people you like and exercise in a ryhtm you can handle - then I think you should soon see improvements.