Please dont jump to changing her formula if shes bottle fed unless you've tried everything else. We thought this with Emie and switched her on to the "comfort" aptamil and it was the worst decision I made. It made her so uncomfortable and gassy and constipated (constipated to the point that I took her to the doctors) so I ended up switching her back. Xx

You would know about it if she had colic she would constantly be crying for no apparent reason and mainly of an evening around the same time! It sounds like shes having trouble with indigestion and id say more so if you've just introduced formula aswel her icicle belly muscles aren't strong enough just yet so it might just be causing her some discomfort or is she constipated atal? They say not to but cool boiled water works wonders just be careful cos it comes out faster than the milk xx

Sounds like colic babe. Have you tried infacol? Also moving her legs in bicycle motions helps and massaging her tummy with warm olive oil in a downward motion
Another thing it could be is reflux. Does she spit up? Is she uncomfortable after feeds? Dr can help by prescribing baby gaviscon x