Is it ok to take low dose xanax (alprazolam) during ivf 2ww to reduce the stress and anxiety of worrying about cycle success? is ambien safe during 2ww?

No: It is best to avoid taking any medications of this nature during pregnancy

Probably NOT: IVF as you know is very expensive and I can imagine that you have exhausted most other ways of trying to get pregnant. Xanax is a Class D drug for pregnancy which means it isn't very safe. Think about the risks vs. the benefits. You may get a few hours of "less stress" but what if something happens to your baby? I don't think it is worth it. Ambien is less dangerous. Try Benadryl (diphenhydramine) for stress