second pregnancy. anyone else?

So I am 5 weeks 2 days with my second baby and I swear I am showing already 😳 I also got on the scale today and have gained 5 pounds in a week. What the heck? I have been eating healthy food and working out almost every day, so I know it's not just packing on pounds...but this bloating! Yikes! Anyone else on their second pregnancy feeling this way? I wore my normal clothes all through my first trimester with my daughter...at this rate I'll be wearing maternity pants next week 😱