My partner and I are in a LD relationship so when we see each other we definitely had a lot of sex... however often times after I leave a few days later I tend to have an itching sensation down there for a week or so and then it goes away! This has been happening since August.. I thought I may be allergic to latex because my mom is and I also thought it was the lube but we tried a diff brand! I also don’t have chunky white discharge or yeast infection symptoms (could be mild I guess).. we have also both been tested

It's probably allergies, there are condoms without latex, I think @Aurielle posted about it before.

Try latex-free condoms. If it still keeps happening then you could see a doctor.