Do you have any pills left? You could still try cutting the pills into extremely small pieces and take a bit. For whatever reason, going completely "cold turkey" as in your body isn't getting ANY ssri makes the withdrawal worse than if there's even a tiny bit amount of it. Even if you tapered it may not have been a long enough taper period. It also depends on how long did you eat these pills and on what dose. The withdrawal can take extremely long time.
I had sertraline withdrawals but because I'm a NEET it wasn't that bad since I had no obligations to attend to. You could try taking like 10% of your starting dose for a week, then take 10% every other day for a week, and so on to make it even more easier to go through this.