How long does withdraw symptoms last?

I know exactly what you are going through ! a little while back I had ran out of my medication it was the weekend right after thanksgiving and I was sicker than I had ever been and I seriously thought I was dying. I couldn't keep anything down, I couldn't even walk a straight line, I couldn't keep balance and had a horrible migraine and that weird feeling in my head. my mom had finally taken me to the ER after being sick like that for 4 days they said i was SEVERELY dehydrated and i had to be given an iv, so i made sure i got my medicine on monday and after taking it i felt so much better with in like 5 hours. I dont want to take this medicine anymore plus we dont have the money to pay for it. but ive heard from most people who have taken this and even just tampering off of it have had with drawals for up to at least 2 weeks. I hope yours doesn't last that long. good luck with everything