With the advances being made to tampon products over the last 20+ years, TSS has become an uncommon infection due to the use of tampons. That is not to say it cannot happen, but if you are careful and don't get crazy with how you insert the tampon(s), you should be fine. Are you pushing them in all the way? I think most use the tampons as a "plug" rather than inserting them fully in e-play.
Just for some information, here is an excerpt from the Mayo Clinic about Toxic Shock Syndrome:
Researchers don't know exactly how tampons may cause toxic shock syndrome. Some believe that when superabsorbent tampons are left in place for a long time, the tampons become a breeding ground for bacteria. Others have suggested that the superabsorbent fibers in the tampons can scratch the surface of the vagina, making it possible for bacteria or their toxins to enter the bloodstream.
The brand of tampons associated with the original toxic shock syndrome epidemic in the 1980s was voluntarily taken off the market by the manufacturer. After that, the number of cases of toxic shock syndrome declined dramatically.
It's not just young, menstruating women who can develop toxic shock syndrome. About half the current cases occur in nonmenstruating people, including older women, men and children. Toxic shock syndrome has occurred in women who had been wearing a diaphragm or a contraceptive sponge. It's possible for anyone to develop toxic shock syndrome in the course of a staph or strep infection. The syndrome may occur in association with skin wounds or surgery.
Good Luck, and Have Fun whatever you choose to do 😉