Hi there Lauren.
Yes at the outset, i think that the tampons may be the root cause of the urethral tingling
et al & may be respnsible for your symptoms.
I suggest you get an STD
package (lab tests) done if you have the slightest doubt. Start with a routine urine examination & progress from there. FOcus on an IgG
& IgM for herpes
simple 1 & 2 virus.
Personally if you are in a monogamous relationship, i dont envisage an STD issue but one has to bear in mind past relationships on either side & the occasional straying that may have occured.
Simply do away with the tampon & drink large ammounts of water to help flush out any residual bacteria & use an OTC citralka solution to help alkalanise your urine & give you comfort.
Cheers & all the best & do practice safe sex!
Dr Praveen Rodrigues MD