Vyvanse is making me feel depressed

Just started vyvanse 10 mg two days ago. First day was...alright? I felt a bit more focused than usual/less brain fog but that was the extent of it. Really minimal effect to be honest. And today I took my second dose. No difference at all. And what's worse is later into the day, I actually began to feel less depressed. My productivity got worse. I got nothing done the entire day. And all I felt was the weird empty dread which was completely different than the first day. Is this normal?