Liver Test Reults

[gsw7190]

Hello, my liver has been perfect up until now. Back in June my alt was 16 and my ast was 30 Now On August 28th my alt is 14 and mt ast is 57. I had a colonoscophy on August 2nn and the DR said everything looked great including the liver. I did start taking Carvedilol (Beta Blockers). I was taking Metoprolol  before I was was switched. Could this be why my ast levels are up? Everything else is perfect. Should I be worried?Thank you,