HELP!!!

Hi, so I think I have a yeast infection, and I bought some monistat to treat it, but this would be my first yeast infection ever. The box says I shouldn’t use it if it’s my first time getting a yeast infection and i should consult my doctor first but the issue is, I don’t have insurance. what should I do? do y’all think it’s okay to take the medicine anyway? i’m starting to panic!😭