Saying "I dont know what to do"

Lately Landon has become extremely fussy! I just did not know what to do. It seemed to have started a few days ago when I started crib training him. It's almost like whenever he is awake now he is fussy. He gets his moments where he decides to be happy and smile (which I love) but most of the time he is scream/squealing and crying. I figured it was from his lack of sleep since he hates crib training but I couldnt be sure. Maybe he wasnt feeling good?! What do I do? I hate seeing him unhappy. He had cried so much this week that his voice started sounding raspy... my poor little guy.
I tried crib training him the whole night last night. He ended up calming down and falling asleep but he would only stay asleep for probably about 1 1/2- 2 hours. So I was going in his room all through out the night. It was almost like sleep on an actual bed was just a tease to me. The good thing is we made it through a night of crib training and I think he did pretty well, especially since this has been the first night home where he has slept alone. I know I spoil my son and maybe that is why he has been so fussy lately. He went from being with me constantly to me setting him down a lot more and now crib training on top of that. My poor little guy! :(
So today I told Daniel, I'm calling the doctor. I wanted to see if they could tell me something I could give him over-the-counter to help him sleep since I figured his fussiness was from a lack of sleep. They didnt tell me I could give him anything for him to sleep, but that they wanted me to bring him in to get him checked out to make sure he didnt have an ear infection or something. So I took him to the Doctor and she looked over his whole body....basically checked everything. She checked his eyes, ears, gums, tongue, skin, pee pee and said she didnt see anything wrong. She asked me some questions and thought that maybe what he is dealing with is acid reflex after talking with me. She told me to give him small doses of Maalox. I made sure that this wouldnt hurt him (considering we dont know if he really has acid reflex) and she said no. I kind of doubt he has that...he only spits up on me about 1 time during the day, but if it doesnt hurt and could potentially help him feel better I thought we could try it. So tonight I have to go get that for him.

Please pray for my baby boy. I hate seeing him unhappy and I just want him to be happy Landon again! :( The baby days get so hard sometimes because you just dont know what exactly to do for your child when they cant talk. I want to be able to reason with him if the fussiness is because he wants me, but I guess its just not exactly that simple. So I ask for your prayers...I know that Jesus can make him a happy little guy again.