How did you feel when you gave up caffeine?

I’ve recently given up drinking coffee and black tea. It was just over two weeks ago and I still feel weird. I’ve had a headache that paracetamol doesn’t touch, although that’s getting better. I’ve been sleeping heavily for as long as possible and still feel sleepy. The long sleeping is great as I used to wake up in the night a lot but being sleepy during the day at work is a bit of a hindrance.

What was your experience? I need reassurance that I will feel normal again!