6 month old crying throughout the night

I've been bed sharing with my 6 month old for a couple months and she usually sleeps very well...just wakes up a few times to nurse. The past couple of nights, she's been waking up frequently and she wakes up crying too. I pull her into my arms and try to soothe her but she's just cries a lot! I don't know what's wrong. She's fed, her diaper is changed, the temperature in the room is 72..,

Any ideas what could be wrong?

I fed her green bean purée the past couple nights about an hour before bed so maybe she's gassy??

My hubby has also been away on business for the past 2 days but I don't really think she'd be crying about that at night... 🤷🏻‍♀️