Hurt and confused

He has a female friend that he has known for a number of years, older than us (were 32 she's in her 40's) and he often goes to her house to sit with people and smoke weed once or twice a week. Now this would be fine - however I have heard her slagging me off in the background when I have been on the phone to him and this makes me uncomfortable him being there - I have told him this a number of times. 

On Wednesday he was there again and I accepted this (he is quite strong minded and will do what he wants), however he was due to come and spend the evening with me and when I called as he hadn't turned up he was still there and had been there for hours. Again I had the conversation with him letting him know I really didn't feel good about it and could he please just leave. No, he does what he wants. 

He then preceded to ignore my calls and texts for the rest of the night - this really gets to me as I have more respect for him than to just ignore him. I find it really rude and disrespectful and really hurts me, especially considering the fact we are in a long term relationship and I am carrying his baby.

Anyway, I made an effort not to call him all day yesterday. We usually speak 2-3 times throughout the day. When I did call, again he ignored me and at 8pm told me he was tired and going to sleep. I did ask him if he cared and he was making me feel irrelevant to which his answer was a simple yes but he wouldn't talk to me about anything.

As I know he has just finished work today, I have called him to see if I can clear the air and make him dinner or something. He has completely ignored my calls again and has now turned his phone off.

I might be being silly but I just don't know what to do I feel like I'm going out of my mind and have gotten myself in a complete state.

Am I being silly and was I out of order telling him to leave her house or have I got reason to feel like this? I just feel like I'm nothing right now. I could never treat someone like that, I don't understand and don't know what to do??? 😔x