Hi I’m Pretty Sure I Have Another Primal Infection From

Hi i’m pretty sure i have another primal infection from unprotected sex, it’s itchy with discharge. i had a chylmidial infection last year and they have me Apo-Amoxi Clav 20 Tablets
I never ended up using them because i got given the drugs again at the STI clinic
Can i use these Apo-Amoxi Clav right now for the new infection i have again unfortunately. I just don’t want to waste the 20 tablets i never used.