Hay mama, yan ang hirap talaga especially pag gabi, I can feel the stress mo dito! Ang baby mo sounds like it could be reflux or colic or kahit hiyang lang sa formula, pero honestly kailangan mo talagang malaman ng doctor next week kasi parang may discomfort talaga siya based sa crying at the arching, better safe than sorry. A few of us nag-experience ng similar, yung isa sa friends ko switched formula tapos nag-improve, pero yung isa naman doctor advised positioning at smaller, frequent feeds so dapat talagang ma-assess ng pediatrician mo directly. For now, try keeping baby upright during and after feeds for at least 20-30 minutes, and when you do burp keep her in that position rather than laying flat right away, it helped some of my mum friends. Stress din yung feel ng baby kaya breathe, mama, you're doing your best!