Keep a close eye on your portfolio positions ahead of a Federal Reserve decision, especially if you're worried about the decision.

Jim Cramer gave investors advice for when they're worried about the Fed. 

And, of course, that included advice on what stocks investors should consider trimming. 

"If you're an investor, you can stay the course. I think that you can trim stocks that you don't think are good," Cramer said.

"So you look at what [portfolio position] you had that didn't have a good quarter...look at your portfolio, make a judgment about [which stock] had a bad first quarter, then sell that stock," he continued. 

Traders are pricing in only a 20% chance of a rate cut from Chairman Jerome Powell and the Federal Open Markets Committee, with the balance of bets on a move in July 2019 that would take the key target rate to a range of 2% to 2.25%.

The Fed will announce its decision on interest rates Wednesday.

Related. The One Geopolitical Event That Could Surprise Markets the Most

More from Cramer Today

Full Replay: Ahead of the Fed: Jim Cramer Zooms in Jerome Powell, Adobe, CBS and Viacom

Cramer Says Trump Is Running Country Like a Company. Is Powell the Apprentice?

Here's What Trump Actually Wants in an Economic Policy According to Jim Cramer

Jim Cramer: Adobe Is the Canvas You Paint Your Creativity On

Major Moves Ahead For Gold Prices On Lower Rates