Suggest Treatment For Headache And Stomach Ache After Prolonged Use Of Tampon

i left my tampon in for 12 hours and while i had it in i had a headache and a stomach ache around the time i probably should've changed it. now i still have a stomach ache, but ive had this kind before, and i have been eating more than my usual amount of McDonald's this week. Do i have tss?