Smoking While Pregnant

I am 4 weeks and I feel incredibly guilty smoking or getting high in general while pregnant. My husband says it’s up to me as he trusts me but the guilt is weighing on me. Smoking helps me cope with all of this. I’m terrified and constantly trying not to have an anxiety attack about the coming responsibility and this is truly the only way I’ve found to calm myself and actually be productive. I ordered some high strength CBD gummies I’m hoping I can take instead. I know plenty of people who have smoked their ENTIRE pregnancy (I plan to stop at 6 months) and their children are perfectly fine and have incredible skillsets early on. I’m just not sure what to do as I can’t really ask my doctor about it.