I'm very afraid of being sick, simply because I cannot take care of myself. So when I start to feel even the slighted bit ill (like 99.0°F) I begin to have an anxiety attack and need to take all kinds of basic ass medicines to feel better and grounded like Tums and Emergen-C. But if I don't have access to those things, it'll grow. And I'll feel sicker, and that will make my anxiety worse, and then my heart starts racing which makes me think I'm getting closer to a textbook panic attack. Overthinking is definitely one of my more negative traits. 

Does anybody else experience this? 
Does anybody know how to combat this cycle?

Also I'm flying for the first time in 2 weeks so if you have any pointers on that, I'll gladly accept it! Not scared of heights, but scared of not having control of the situation.
Thanks