GAD vs OCD? What is it? So what is it?

Hello doctor i dont know what i have , i am taking ozep 10 mg and escitalopram 30 mg for ocd as my psychiatrist recommended.. But still i have doubt that what i have ,i am confused between ocd and GAD . This is my 50th query on practo about my disorder , i never satisfy 100% with any answer and always Google about my disorder , I want narrate an incident of mine , there was a camp where sugar level was being checked , i went there to check my also ,it showed normal , after going 1 km far from the camp , a thought came to me "did he change the syringe? Otherwise i may have aids so i went again to the camp to reassure that . This kind of stupidity is not normal , i reassure things (not every day like ocd but sometimes when anxiety rises ) I am a huge procrastinator , i have many thoughts running in my unconscious mind and i feel helpless , i walk here and there thinking about them ( they are just unnecessary thoughts) So what is it ? Plz tell me And it is not classic type ocd ,