[Solved] She hates me!

I saw that someone posted a similar thread not long ago but since my situation is slightly different, I thought I would start a new one.

Please excuse al naivety in this post but here's the situation:

I met my girlfriend several months ago. The relationship was pretty new but it wasn't before long - when I moved in (pretty much straight away...something I can go into further detail if you ask) and then later lost my job, and so found myself spending a lot of time together - that things fell apart. Granted, I was a burden on her. She was paying for everything and pretty much felt like the man in the relationship. She was getting sick of the sight of me. Despite the fact I was great with the two daughters that she already had, her parents and siblings absolutely love me, and so did she, but we never utilised the honeymoon phase of the relationship where you're SUPPOSED to miss each other and spent time apart. We were so in love and every day was like a dream come true. I quickly realised that I wanted to spend the rest of my life with her and committed so in my heart (I know...crazy to say such a thing in such a short space of time). I subconsciously took advantage of the fact that she was so easy-going about me living there, but that quickly took it's tole to the point where she wanted me out.
I was desperately trying to savour the relationship and she told me that she didn't want to break up, she just wanted space. The hardest part was that this was shortly after we'd had [censored] for the first time...as a matter of fact, it was my first time...EVER!!!

Finally I moved out and gave her the space she wanted/needed. There was no contact between us and we never saw each other. Things felt like they were getting worse rather than better. We got to a point where we blocked each other on social media and everything. She took my name out of her twitter bio and said some very hurtful things when I tried to contact her so I changed our relationship status to single.
But I loved her and I couldn't accept that it was over. She soon began to evidently miss me too and we slowly got in contact again and things were looking up. She said that the next time I see her, she needs to tell me something if we're going to work things out.
One Saturday during a phone call, she asked me when her period was due (because I used to keep track on an app on my phone), and I told her "Tuesday...". She said "Tuesday coming" and I told her, "No...tuesday gone".
She ended up going to the doctors and when she returned, she called me up. She was scared but I was strangely quite calm. She told me on the phone "I'm pregnant. But I also need to confess something. The day after you left...I slept with someone else". I immediately forgave her and didn't react negatively in the slightest and committed to working things out because honestly, with every fibre of my being, my heart violently loves her.

We started to work things out and things were continuing to be on the up. She even started telling me she loved me again and told me that she missed me but a few days before new year, things turned sour again. She's stopped talking to me, she doesn't want me to do anything. She doesn't doesn't let me know how she's doing or anything. I went to hers the yesterday day because we had a scan appointment to check that the baby was growing okay. Everything with the baby is fine but things between me and her are [censored]. I feel so shut out.

I've been reading a book about pregnancy from a dad's point of view (It's really good, I highly recommend. "The Expectant Dad's Survival Guide" by Rob Kemp. That's where I heard about this site) which has been really helpful. It warned me that women can be hormonal and have mood swings during this time of pregnancy so I'm trying to put things down to that. But I feel so shut out. The book tells me how communication is key but I can't even get her to talk at all. I'm trying to be patient and figure that when she's ready, she'll talk to me. I came to the conclusion that "when there's nothing you can do, do nothing" but I feel like there's always something I can do.
I'm trying to do all that I can. I'm sending her positive voice notes on a morning (that she doesn't reply to)...but that's all I can think to do. I'm looking to suggest maybe taking her daughters out here and there so that she can rest and have some uninterrupted sleep but she currently has a a best friend who is always there doing everything and probably doing that too so I just anticipate being shut-down. Please let me know your thoughts. I feel so alone right now, back-london, no immediate family near me, no home, and currently awaiting a job to get back to me about an interview and trial shift I had today.