Hi NatalieJastrow. Welcome to Psych Central. I am sorry you have concerns about your healthy. Hope it is nothing serious.
I try to not react because often my reaction is worse than the situation I face. It is not easy to stay calm when we face possible serious issues, but on the other hand, what good does it do if I get upset about something that may not even happen? And even if my fears are justified, I take more comfort from accepting things I cannot change.
Hope you get a clean bill of health.