| Thank you all for your support. I'm very glad to say that it was not an heart attack. They checked the arteries/veins to the heart and there was no blocking.
They say it's most likely an iflammation of the tissue around the heart, so it's treatable with normal anti-inflammation medicine (stuff people use for headaches). He'll be going through several tests through the night, so he's in good care.
He even got a helicopter ride from the hospital to the hospital where they had specialists on heart attacks and such.
Before I called and knew it was not an heart attack, it was the worst night ever. It was just horrible, I have no idea what I would do without my dad. He is only 54 years old, and lives a fairly healthy life. But now he's going to get well, he has to work less (running own company), exercise and eat healthier.
Thank you again for all your kind words =) | 
