Oh you poor thing, I know EXACTLY how you feel, I really do. Our DD was so similar, just massively hard work for what felt like ages. She had silent reflux which we didn't realise until she was 3 months and though she got better once she started treatment she was Hard. Work. Cried at so much, got frustrated at everything, I used to always be anxious when going anywhere with her other than good friends' houses - baby groups, supermarkets, public transport, cafes/restaurants... you name it, I'd be in a permanent state of high alert, waiting for her to start wailing (she rarely let me down).
Worse, she too woke at 5-5.30am, plus often multiple times in the night, too. We saw all manner of health professionals, I trawled websites, forums... there was nothing wrong with her. It was just the way she was. I was jealous and upset about how easy other mothers (parents) had it - they just didn't realise what it was like.
However... walking, then talking made a big difference. And as others have said, the more they grow and develop, the happier they get. In my DD's case, and quite probably in yours, I think she was just frustrated at being so unable to communicate, or to do the things she wanted to do - move about, reach things she wanted, explain what was on her mind, and so on. By the time she was 3 I realised that things were a lot easier, but that was a gradual process, no overnight change, so I don't meant you have another 2 years to wait before you see any improvement!
If you look back on this in 3 months you'll hopefully recognise that things are a bit better, then in 6 months that they definitely are. Then in another 6 months, and so on. Hang in there - it's not easy but those memories do fade quickly (something I really didn't believe at the time). DD is nearly 6 now and she is still a very stubborn, tenacious, sometimes infuriating individual, and still harder work than many of her peers. But dealing it with it is so much easier when you can actually have a conversation.