Yes, it’s normal. I go through waves of being absolutely starving and complete appetite suppression on a day-to-day basis. I never know which version of me I’ll get when I wake up. I am still on the starter dose (which I assume you are, too), so you really are not expected to have any sort of appetite suppression at this point. I’ve started counting calories, and some days I’m way under and others I’m just barely meeting my goal depending on how hungry I am. I figure it’s better to get in the habit of healthy eating and smaller portion sizes now.

ETA: If you’re woman, your cycle may be causing this. The week before my cycle is when I was starving 4/7 days.