Side effects GHKCU

Hi everyone, was taking Ghkcu for about 3 weeks. I was good the first 2 weeks but after the 3rd week I started to get panic attacks, fatigue, non stop anxiety, I had trouble speaking or even thinking and I got like depression out of nowhere. Never been depressed in my life. June 13th was the last day I took it and it’s now June 29th and I feel like I haven’t felt normal again. I want to go back to the person I was before I took this and I feel like I’m constantly fighting this anxiety. Has anybody felt the same way?