TMI!!! Itchy!!! Edited

The day after my period ended I took a shower and shaved, and I'm pretty sure I cut myself but couldn't tell exactly where. Two days later I'm itchyyy ASF, slightly sore on both sides of the opening and my discharge is a very yellowish and really thick/clumpy.

Ive had a uti once in my life and nothing has changed from my usual routine. Cotton undies, dont use soap down there, so idk what's causing this. Surely it's not just from a little cut?

I don't have insurance to see a doctor so I'm basically just keeping clean and trying to deal with the itchiness 😣

Eta: next time I go to the store I'm going to get Monistat, though I'm a bit worried that it won't work because What If it's something else and not a yeast infection??

Also, I have amoxicillin from tooth infection, would taking that help with an infection down there??