18-M Penis and testicles touched upper side of toilet bowl (under the plastic seat) of work toilet should I get tested for std? I am really scared and new to sexuality

Today my penis and testicles touched the upper side of the toilet bowl and I am scared because I am afraid that masturbation (that I generally do at home) could have created invisible cuts that could get STDs in after contact with toilet at work should I get tested for stds?

I just did STD tests 2 months ago soon after turning 18. But I never had sex or close contact with anyone.