Itchy scalp and gross hair

Kourtney
Since being pregnant my hair and scalp has been the worst part! I've never been one to color or wash my hair too much. Usually 3 days down and a fourth day in a ponytail before the washing process again. I've never had dandruff and honestly have some of the healthiest hair ever. However is not the case. My scalp is itchy all the time, my ends are dry and splitting, and the roots look like I have never washed before. I seriously cannot go an entire 24 hours without washing my hair. Any recommendations or tips would be MUCH appreciated!