As someone else who has been depressed, when the SSRI start working (& it can take 6 weeks IFF they work) you have energy and the ability to act that you didn't before.
I wasn't suicidal during my depression and that did not change. It didn't change any of the times I had to switch medications (you have to taper off and go through depression before you start the next).
I put my energies into things I wanted to do but couldn't with the depression. If I had been suicidal, maybe I would've tried.
Instead I did the things I had enjoyed before. With the depression, it wasn't possible to enjoy those things. I even questioned if I had ever enjoyed them.