I did! For me it started on day 4 and lasted for 3 days, I had a headache, body aches, nausea and fatigue. It was not fun. But it was over soon, so hang in there!
Personally I wouldn't stop drinking coffee, because going through those withdrawals can be pretty bad too and I wouldn't want to go through both carb withdrawal and caffeine withdrawal at the same time. Just keep doing what you're doing, you'll feel better soon and you'll be so glad you stuck with it.