Anyone here ever experience minor depression while on an AI?

I've been using Adex (pharm grade) at 0.5mgs EOD for about 4 weeks now and I swear I'm beginning to feel a bit depressed. Feeling a bit on the sad side. I don't smile as often as usual. Feel like crying for past events that happened in my life, events that I let go a long time ago.

Is it possible to happen on Adex at this dose?