Bumps?!

Amanda
I am pregnant with my 2nd son!! I am 17 weeks today and was wondering other moms experiences here....for the last month I started to show some, some days I look noticeably bigger and then some days I look regular. The tiny budge is still there but how can I look more pregnant at 15 weeks then 17?? Wondering if anyone else fluctuates in this way! Thanks in advance!