Ditto whitemerlot, like 12 weeks for pants. I also like things to be loose fitting and the Bella Band did not work for me. It just rolled down, it didn't hold open my unbuttoned pants like it was supposed to. I think I did the maternity jeans with the elastic sides at 12 weeks, and the ones with the big tummy panel at 20 weeks. I am small (5' 2" 130 lbs) and DS was HUGE (9lbs 3 oz) so everything came out right in front pretty quick. If you're uncomfortable, go ahead and switch!