Anyone know anything to help quit while pregnant?

I'm 31 weeks with my first baby and I've majorly cut back my use but I wanna quit smoking, its just hard due to the nausea/uncomfortableness/to help eat/mental issues and have other habits I quit for my pregnancy..but I really wanna use the money to prepare for my daughter, I feel like a shit mom already cause Im still spending money on pot to help me physically...has anyone found something helpful I can replace the pot with or help me with the nausea and everything else so I dont feel like I need to smoke?