Hi, My Name Is Carla. I Need Help With Trying

Hi, My name is Carla. I need help with trying to find out what is going on with my mind. I found my parents dead and my youngest brother he was 31yrs old at time of his death. All died of natural causes. They say i suffer from pstsd, but i think something else may be going on. I can't stop myself from checking on my family all hrs of the night, I go to see if they are breathing, scared if i go to sleep they will die and i can't help them. I have been on several medication for this. I suffer axiety disorder. I am now on clonphin 2mg 1 time a day. But i still having the same problems. If you need me to explain more, please say so i do my best, to describe everything. I worry about every little thing. Can you please help me understand better...