<human>: Can you provide a brief rundown of the text in within 3 sentences?

So late Sunday night my dad took himself to the hospital because he was having chest pains, they admitted him and all that, and he texted me Monday afternoon right before class to tell me that he was in the hospital, but not to worry and all that stuff that a dad should say. I have talked to several people in the past 12 hours since he told me, and everyone who knows anything about it says there are incredibly minuscule odds that anything bad will happen, especially since he caught it early and got it taken care of. All I know at this point is that they're keeping him there for a few days to run tests and find the cause of everything. But the problem I am having is that the logical part of my brain knows not to worry and has helped me be fine all day, but now that I have been trying to fall asleep, I can't close my eyes without my subconscious running through all these 'what-if' scenarios that have million to one odds of happening, and it's seriously stressing me out and stopping me from being able to sleep. I read some, listened to calming music, but every time I close my eyes, there it goes again. So if anyone has any sort of advice on how I can shut part of my brain up and get to sleep, I will love you forever. Also, we don't have health insurance, so if you have any knowledge of US health insurance workings, could you possibly fill me in on how this is going to work, money wise? We obviously can't afford to pay out of pocket.
<bot>: Dad in hospital with chest pains and now I can't stop keep the back of my mind from worrying me and can't sleep.