I’ve never had a yeast infection before what should I do ??

So this is pretty embarrassing to post but 😅 I’ve never had a yeast infection before so I have no idea what I need to get at Walmart tomorrow to get rid of this . I know there’s all kind of Monistat at Walmart so I’m wondering which one I should get and is there anything that I should get besides monistat ?? Also is there any tips or tricks to help with the burning and irritation???