I feel like I'm going crazy

So my daughter is 2 months old and cries and as soon as I hold her she stops. She's fed and changed already. So I put her down to get things done and she cries non stop, people tell me to let her cry it out be she seriously can go 30 minutes crying and then stops 2 minutes and goes back at it again. I feel so overwhelmed and helpless I don't know what to do anymore