Anyone else feel like time is flying?

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I'm normally a very emotional person, but this is killing me. I feel like I just had my baby girl and I blinked and now shes a few days away from half a year old. She got her first two teeth a few weeks ago and I sobbed. Tonight shes sleeping in her crib for the first time, not in my room and I'm crying again. I worked for 2.5 years to have my rainbow baby and now shes just growing so fast. My mom heart hurts. Anybody else feel this way too?