YES! It does get better. It gets so much better. There are many addictive chemicals in cigarettes other than nicotine--harmful, dangerous, insipid chemicals the cigarette companies don't talk about. Your body is flushing it out. But, in about a week or so, you'll notice that you can finally breathe, you'll have more energy, any coughing will cease, you'll no longer feel congested in the mornings, you'll sleep better.. and not long after that, you'll start to taste things.. even bread (if you eat bread) will begin to taste delicious. You can do this. And you are not alone.
You'll find, at least at first, that you will be vaping more than you smoked. This is natural. What nicotine strength are you vaping? And how much did you smoke before?