Can Metoprolol cause your cholesterol to go up?

Here is an accurate and extensive list of side-effect of Metoprolol:
https://www.drugs.com/sfx/metoprolol-side-effects.html
"... Metabolic side effects
Metabolic side effects have included significant increases in VLDL cholesterol and total serum triglycerides, and significant decreases in HDL cholesterol. A case of hyperkalemia has been reported. At least one case of metoprolol-associated hypoglycemia has been reported. Very rarely, weight gain has also been reported."

Yes, there have been reports of increased cholesterol levels. You will need to talk to your doctor .