My daughter is now 9months old but when I first brought her home she would scream at night too.
Then after she let out a few farts she was ok so I narrowed down the screaming to be associated with gassiness.
I gave her one tiny drop of the "GasX Infant drops" on the end of her pacifier and ler her suck it off (so i would not choke her) She was only days old and it is scary to give them anything that young but it helped.
Still though, I had a nag to figure out why she was so gassy in the first place and why she would spit up from time to time because I did a LOT of reading when pregnant and found that no baby should have to spit up on a daily basis.
I breast fed for 5 weeks until my milk vanished but alwasy had to substitue with formula because my breasts simply did not produce enough milk for my daughter and I stared on Enfamil LIPIL.
Through trial and error I found that the lactose free enfamil worked best for preventing gas.
Then after i fixed the gas problem she then got constipated and I had to fix that problem- the doctor said white grape juice would fix it and it did- but i wanted a permantent solution.
I had to make my daughter 2oz of powder formula and mix that with 2oz of readyMade liquid formula for every 4iz bottle. While that seems tedious, by the time my daughter was 3 weeks old I had no problems with bowl movements, no gas and no spit up.
She is 9 months old now and she has never spit-up and has not again gotten gas except the time her pedatritain recomended that she is no longer lactose intolerant to switch to normal formula again- wow waht a mistake! GAS and FUSSINESS follwed that change.
Consider that your child is lactose intolerant. If you research lactose intolerance online you'll realsize that about 75% of people who are lactose intolerant do not know they are lactose intolerant and live daily with gas not knowing the underlying cause.
(me benig one of them who did not know that I was intoleratn until I was 19 years old)
Hope this helps
@}~>~~