What to do about first day using nicoderm (nicotine patch) patch and still having cravings is it ok to use e-cig?

I don't recommend it. E-cigs have not been shown to promote smoking cessation in all people - some actually find it a path back to smoking. I recommend the use of nicotine lozenges or gum when cravings come up, while still using the patch. If you are on a lower-dose patch and were a very heavy smoker, then raising the patch strength to 21 or 22 mg may help, or even using more than one patch. Get into a program as well.