Nexplanon symptoms

So I got the nexplanon like 3 ish months ago maybe a couple weeks more, and my symptoms were like no bleeding but then I started bleeding too much after a month so they put me on a medicine that has stopped it besides one period but now no bleeding. And over the summer when I got it I really wasn’t eating a lot at all kind of because it was summer and I had no routine so I just forgot to eat and I lost a lot of weight and now that schools started back I’ve been eating a lottt more and I don’t get full as fast, that’s how I was before this summer. And I haven’t really noticed other symptoms except for being irritable sometimes. They said it would take a while to regulate but with all the factors is this all normal?