My hair has suddenly started to fall out and go really greasy after just 2 days of it being washed?

I used to have really thick healthy shiny hair, but recently its been falling out at a scary rate.. And becomes greasy very quickly but before took almost a week to become like this but 2days after its so greasy!!My hair has suddenly started to fall out and go really greasy after just 2 days of it being washed?
its called growing up, you need to wash it AT LEAST every second day. Its gross to leave it a week. Ew.My hair has suddenly started to fall out and go really greasy after just 2 days of it being washed?
Listen to your body ... it is trying to tell you something. Maybe you are pregnant/hormones, maybe you are lacking a certain vitamin/mineral, maybe you have a health issue developing. Find out what it is, don't ignore it.