my baby is 3 months old, and she is having different mood lately,, at 7pm she always have a routine of crying, and she doesnt stop till she slept, then minutes after sleeping she cries and need to swing her again to get her back to sleep.dont know why she doing that evrynight, we put acetite on the tummy bec. we think she having bad gas on her stomach, to make her fart,, but it doesnt work she cries like she is being hit... i panic with her loud cry..pls help