Starting solids

Our pediatrician said we could start cereals and purées at his last well baby visit so we waited a few days after his shots so if a reaction occurred it wouldn’t be clashing with new foods and such. My question when did you personally start purées? ( no hate, already spoke in depth with OUR pediatrician.) Did your baby have a reaction? If so what kind and how did you know? I am so nervous about trying purées because I have a few food allergies and I am afraid my baby will develop them too.