I think i have a yeast infection, i have chunky discharge, itchiness, and swollen vagina hurts during sex, what treatment should i use?

Imidazoles: for intravaginal application are available over the counter for use at the consumer's discretion. Vulvovaginal candidiasis (yeast infection) does typically have chunky curd-like discharge. One might consult their primary physician to confirm the diagnosis as there are other causes of vulvovaginosis if otc medication fails.

Try an OTC "azole": This certainly sounds like a yeast infection. If you have had it before, professionally diagnosed, and the symptoms are similar, you can safely try an over-the-counter yeast medication. Look for active ingredient ending in "azole" (miconazole, clotrimazole, etc). All are equally good; you can choose the least expensive. See a doctor if no improvement after 3-4 days.