"Teenage" pregnancy

Mary
Am I the only one that hates when people refer to my pregnancy as a teenage pregnancy? I'm almost 20, and have twins already, this is my second pregnancy. I most definitely feel like an adult and I am very mature. Me and my fiance have our own place and take care of our children and work. But I'm still referred to as a "teenager" maybe it's just the hormones, but it bugs me!