Nah, you can't time the market. If you can afford to ride it out, try it. It might be a rough several years.
If you pull out now, and Trump reverses everything and the market rallies, you'll miss the train.
If the stock market completely collapses, the value of the dollar will too.
That said, you could pull all your investments and buy guns and ammo instead.
Note: pay zero attention to me I have never made a successful stock gamble, despite attempts.