anxiety over a real illness

Hi...wasn't sure where to put this. I've always suffered from health anxiety. Now, however, I have a real illness. I came home from Mexico last weekend and was diagnosed with a blood clot in my leg. Unfortunately a few days later the clot travelled and is now in my right lung. I'm really really scared. ER drs put me on blood thinners, they say I'll recover, my gp has referred me to a hematologist. I have no idea when the appt will be. Has anyone else gone through this. I'm really struggling with the anxiety over this. I have so many questions and can't get any answered until I see the hematologist. I hope someone can help.