Is it normal to feel happy this early?

So this is my first time trying an SSRI. I’ve always been scared to take them, but after developing a chronic health condition last year, I decided that it might be worth trying.

I’m currently on day three of sertraline and the first two days were pretty rough. Day 1, I felt high and very detached from my emotions. The second day I was anxious all day and today I’ve mostly been drowsy. However, i’m also feeling emotions of happiness at the moment or just hopefulness I guess. While I’ve been dealing with side effects, I’ve been checking Reddit to see if other people have been experiencing the same thing so I’ve read everything good and bad and I guess I just had a moment of hopefulness and read a few success stories and now I’m motivated to keep going. And when I realized I started getting excited about what my future could look like I thought to myself wait am I supposed to be feeling this yet? Like is it normal to have these moments of energetic happiness or is it supposed to be rough the whole time?

I’m aware that this process is going to ebb and flow and I’ll definitely have some rough days ahead of me but of the last three days this one has been the most manageable so far.