Valid concern or just hormones talking

Hi, so im pregnant with my first child (9 weeks) . Me (23 years old)and my boyfriend (25 years old) are over the moon. But lately ive been feeling really alone . I handle the financials and cooking etc right now until i can fee better and he works to provide right now which im grateful for but i feel as if im going through all of the worries , vomiting , crying, and pains alone. When he comes from work He gets high off of weed every single day sometimes twice a day (so mentally i feel like he isnt always present ) and it smells awful. He also always goes over his friends house more than 3x a week to smoke for like 2-3 hours (sometimes he smokes outside of our house alone for 2-3 hours )and doesnt shower after or even try to accommodate my pregnancy smells( it literally makes me nauseous). Its really starting to become very unattractive which im heartbroken about because i love him , we’ve been together 6 years.I have talked to him about this multiple of times but he doesnt see anything wrong and continues to do it. My ask is that he cuts back smoking and spend more time getting to know whats going on with me and the baby and be more present mentally and physically. Is this just pregnancy hormones or do i actually have a valid concern?