wakes and cries hourly in the night

My 2mth old LO had been having a rough night's sleep for the last 2 days. She wakes every hourly in the wee hours, cries badly and it has been challenging to soothe or calm her down. We have tried changing or fresh diapers for her, removing and re-swaddling her, coaxing and assuring her verbally and with physical touches but nothing works. She was also not crying due to hunger (if on EBM, she pushes the bottle teat out and doesnt finish the milk). Husband thinks it might be teething as she keeps rubbing her face/mouth against our shoulders or necks when we carry her (swaddled) upright. Any thoughts on what she could possibly be having or going through? Any parents who went through similar phase (i hope it is a passing phase!) and can share what you did to help LO calm down and sleep better?