I got super itchy my last two trimesters and found liquid vimiman e oil worked wonders. (You can find I in be vitiman section)
When it got so bad that didn't help anymore my OB let me take half a benedryl tablet to ease the itching once I reached 30 weeks.
When my stretch marks itched I used palmers cocoa butter.
Have your doctor check you for cholestasis just in case.