I've had anxiety my whole life and worry about everything. 

I am so happy to be fully vaccinated, however my brain keeps questioning if the doses were prepared or stored correctly. Pfizer is a lot more delicate with storage and preparation from what I've heard. 

To my understanding Pfizer must be diluted, and takes some skill to prepare before injection? There have recently been stories of doctors messing up the preparation which resulted in giving some people an ultra low dose. 

I have no evidence this has happened to me. However my brain keeps saying "What if I'm actually not vaccinated"? 

I know it sounds ridiculous, but that's anxiety. How can I deal with these thoughts and can anyone provide more clarity of the complexity of preparing the Pfizer shots?