Please advice solution for skin scratch my fiancee got after collision with door.?

actually 4-5days pahale main apane door se buri tarah se takrai thi, thodi si kharoch aayi.Aur us time par bas halka sa red ho gaya aur koi khas pain bhi nahi hua.Next day dekha to woh poora greenish black ho gaya, kal dekha to bahut hi bhayank sa dikh raha hai.Its like yellow+red+black and halka sa kuch touch bhi ho to bura wala pain. Aur mujhe doctor ke paas bilkul bhi nahi jana.May be aap kuch suggest karo ki main kya karoo?