fussy and moody baby

He has severe reflux and is on ranitidine domperidone and gaviscon, also with dairy free milk. He also has a mild heart mumur. Thinking new meds would cheer my baby up, although he still is suffering from reflux and severe wind he is so grumpy and miserable all the time. I am hating being a first time mum right now. He vomits after most feeds, he doesn't want to lay on his back in the Moses basket and sleeps on our chests, he always looks and seems agitated when awake. 

Does this get easier, as right now I feel doomed 😞