Vaping in pregnancy

I’ve been vaping since 17 years old which is now 5 almost 6 years ago. Before I got pregnant I switched to 0 nicotine which actually worked out and then quit cold turkey. I’m not almost 30 weeks pregnant and have unbearable cravings to vape. Not nicotine but just my vape. I’ve been hesitant but thought about going back to no nicotine vaping until baby is out. Considering the dangerous part of vaping would be the nicotine, I figured no nicotine would do no harm. I’m here for EDUCATED advice and not judgment because this is actually the hardest thing I’ve had to go through. TIA