Is It Safe To Take Haldol Injection,Prozac And Cogentin For Heat Exhaustion?

I am taking 25mg injection of Haldol, 20mg Prozac and 1mg Cogentin. I play tennis regularly and on several occasions have suffered from what I believe to be heat exhaustion. I play for 2 hours, eat lunch, shower and go to work for 3-4 hours. While at work, I sweat profusely, get an extreme headache, get very weak and end up vomiting for several hours. Just yesterday I had to go to the ER for fluids and meds to stop vomiting. Is this a direct result of the combination of all the meds I take and the sun/heat?