Depression Medicine Help

So I have been given depression/anxiety medicine by my doctor. I’ve only taken it twice so far, but the first time I took it, it made me really tired, but shaky and jittery. My jaw felt stiff and I would have random twitches. The second time I took it I had the same side effects but not as severe. Should I keep taking it? I only just started it, but I’m not sure if these side effects are normal.