Maternity clothes?

Hey yall. This is my first pregnancy I'll be 14 weeks tomorrow. When did everyone start with maternity clothes? My pants will button but they are snug and when I set down I unbutton them so they aren't pressing so hard and making me feel uncomfortable. I don't really have a bump that I notice I was chubby before getting pregnant. But I do notice a bump when laying down lol I just am not ready to make the switch yet and I'm wondering if anyone else has??