Confused

Ok I will try to make this as short as possible.

I have been with my S/O for 4 years now and we have had a lot of bumpy situations ie: him cheating on me and lying, friends/family coming in between our relationship and him allowing it etc. I have my faults too like he says I nag too much lol.

Ok so anyways we ended up getting pregnant last year in October around my birthday and I was so excited but he pretended that he was too. I found out later that wasn't the truth through messages I saw on fb to different females that he had been trying to hook up with and did in the past. That truly hurt so bad to where I stressed myself and ended up having a miscarriage on December 27th 2015.

So leading up to today I found out I was pregnant at the beginning of this month(August) and I don't know how to feel nervous and scared are my #1 because of the miscarriage.

We went and had an ultrasound on the 26th and everything was normal and heard a healthy heartbeat of 144bpm. I was so excited and then I look over at him and he's playing on his phone and all excitement went out the window because I feel like I'm going to be doing this all on my own.

I can't talk to him about how I feel and things I'm concerned about because he just says that I'm nagging or complaining. I'm so confused and don't know what to do. Sorry I just had to vent I usually don't do this. Thanks for listening and I hope it makes sense