Hi,
Noted your history of touching penis to a public toilet and
anxiety about having infection or so as you have
tingling sensation at the tip of penis.
First of all, control the anxiety as the medical science is based on scientific basis.
Hence I would advise you the following in such a situation to get over the anxiety.
Get the tests of urine done for routine, microscopy, culture and sensitivity, culture and sensitivity.
Tests of blood for CBC,
kidney function tests and STDs in particular.
If all the tests are normal then your anxiety will get over and you will be assured well.
The tingling sensation can then be taken an due to anxiety.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. T. Chandrakant, General Surgeon