Is postpartum anxiety a thing?

Is this a thing? If yes how did you know you have it and what did you do about it?

Just trying to figure out my feelings because it’s definitely not depression but sometimes I feel overwhelming anxiety when I go anywhere with my 2 month old but I’m fine when we’re home. I’ve always been a somewhat anxious person but it just feels worse now but i know it’s normal to worry about your baby so trying to figure out if I’m just being silly or not ha

Thanks!