we lived in Mayaguez, pretty close to San Juan. I enjoyed it a lot when I was there but it could have gone to shit, I haven't lived there in years!
Sorry I know this is kind of late but
Not to be a mood-killer here, but Myaguez is distant from San Juan. San Juan is located at around the northeastern coast of the island, while Mayaguez is at the westernmost part of the island. But still, I hope you get better man.
I really don't know what to say other than relax, take it easy, and the best thing you could honestly do is breath in and out and the usual praying. My brother is suffering from Skin cancer, and it got pretty hideous seeing him being so sad about it. He is a strong person, but when it comes to cancer, it is hard to fight back. So once again. Just take everything easy, lay low and go with the flow.