How soon is too soon to buy maternity pants?

Erica • Chef and wife. Mom to a 15 month old. Mom to a little jellybean on the way.
I tried some skinny fitting pregnancy jeans today and they were AMAZING. I'm currently 6 weeks and one day, so I feel like I maybe shouldn't but them until 15-16 weeks when I really start to get an idea of how much I might grow. I'm experiencing some bloat (enough to make my pants feel tighter). Also factoring in this is that I'm pretty chunky in the tummy area (thanks, PCOS), so maternity pants would naturally be more comfortable for me. Thoughts?