Maternity clothes?

Sierra • Mother to a 5 year old little girl and pregnant with my second child :) happily engaged
Im 12+3 with my second child and I'm going to motherhood today to get a pair of jeans. I've been living in leggings for 3 months and none of my jeans fit. That silly hair tie on the jeans doesn't work for me lol. So I'm just wondering if this is super early for maternity clothes?? When did you give in and get some pants?? :) thanks