my eldest son was the same.he wouldnt sleep in a cot, he'd cry as soon as he was put down, if he was awake he was screaming,crying,feeding or throwing up.i havent got 1 photo of him under 7 months and smiling.
i would cry and cry not being able to console him.please make sure that you stay in touch with your hv and doctor about your antidepressents and help with this.
i carried him around in a sling or had him laid on his front on my chest all the time.the only way he would sleep in his cot was pillows as it moulded around his sides and he thought i was still holding him.im not saying you shuld do this as i know its a risk of him smothering himself.
its the only way that i could get him to sleep during the day by him falling asleep crying in my arms and then going onto the pillow in the cot and me constantly checking him to make sure he hadnt rolled over so he couldnt breathe.i never had him like that at night.i wouldnt risk it.i mainly just sat next to the cot in the lounge (we had 2) so that i could at least have a break from him being held even though i was still next to him.
is he bf or ff? i was recommended cow & gate comfort.they didnt recommend it until after he was ok though so it didnt help me.alot of people ive spoken to about his problems including new midwives etc have recommended it alongside dr browns bottles.lactose can cause this crying and a bf baby has got alot of lactose in the breast milk.its not just in formula
just an idea.could you change to it or ask the hv or doctor for a lactose free milk to try and see if it wll help calm your baby?
i'll stop going on now.i know it is so hard but please please, dont think that any of this is your fault or that your baby doesnt love you etc.he does.he will get through this and you will get through this.
keep posting when you get stressed and let him cry for a little bit.it wont hurt him if you leave him in a different room safe for 5 minutes and it will help to calm you down.
thinking of you.