LO keeps crying

My LO is 2 weeks transiting to 3 weeks. The past few days (we thought it’s growth spurt) she has been crying. I suspect she is overtired. How do you soothe overtired baby? She keeps showing hunger cues but actually sometimes she just needs to burp. She will cry and scream so loud, i tried to put her in my arms, rock her, try to make her to sleep but she just cant stop screaming. I am at loss now.. #firsttimemom However when the nanny took over, she is quiet for a while then cry again…… but with nanny she will continue crying on and off about 10 mins then quiet. If you think i didnt spend enough time with her, the answer is i always spend time with her from the moment she wake up until dinner time🥹#firstbaby