Lately Having to Do With Getting Used to The Insulin Pen

I've been posting questions lately having to do with getting used to the insulin pen. So, here are three more:

1. If you consumed more carbs than you should have on day 1, are you still seeing higher readings the next day?

2. If your carb intake is steady, do you still have high reading days and low reading days? How much of a swing do you experience?

3. I know everybody is different, but I'd like to know what your carb limit (grams) is per meal to keep your readings where you want them.