Antidrepressant discontinuation symptoms

I got iff my Zoloft almost a week ago and I have been having the worst withdrawal symptoms, I’m having nightmares to the point where I can’t sleep now cause I’m too scared, I’m so irritable and sad all I do is cry and think about dying, I even had a dream last night that I took a whole bottle of pills to die, I want it to stop, the worst part is I wasn’t even feeling this bad before I was on the pills, has anyone experienced this and if so how long does it take to go away?