it’s 3am and i’m in so much pain

so i’ve just woken up at 3am and earlier on in the night i was masturbating and fingering myself and i have fingered myself a few times these past few days and last night was painful and it felt kinda itchy , but i just brushed it off at the time but now it’s so itchy down there and i can’t cope with it. i think i have a yeast infection, if someone could please help me with ways of getting rid of it quickly it would be so much appreciated