Weight gain

This is my second pregnancy.

I am 23 weeks and have already gained 20 POUNDS!! 😢🥺🤯 I am not large by any means, pre preg weight 147 and now 167.

This is a huge difference when comparing my first pregnancy, as I gained 28 lbs and I carried to 41 weeks.

Should I be worried? I know I have been craving the sweets much more this time around and haven’t been able to exercise much due to SI joint and pubic bone pain but I’m thinking I need to buckle through that pain and start some kind of exercise regimen! Any advice?