The insides of my vagina is swollen, feels like scales and also itches a lot since a couple of days. the outer part is also irritated/inflamed?

Vulvovaginitis: May be a Candidal yeast infection which are common in women. You may try Monostat or another OTC brand of treatment for a yeast infection, but be sure to schedule an appointment with your primary care physician or OB-Gyn for a perlvic exam to make sure. Try using Dove unscented soap, white toilet paper with no fragrance, and Dreft detergent in case of irritation. All cotton panties are best.