weight gain?!

Lacey • Mommy to Sophia Kathryn 💕
So it has been 5 weeks since I had my last appointment with my OB at 19 weeks. Now that I'm 24 weeks I'll be going back tomorrow. Although I have some concerns I will talk to her about I wanted to hear your guys' thoughts. I way 125lbs currently and that was my prepregnancy weight. I lost 10 in the first trimester but gained it all back. I only gained 2 pounds the last time after 5 weeks. They haven't really said anything about my weight but I'm concerned I'm not gaining enough. My stomach keeps growing so I know she is too. How much have you moms gained? Is this normal for someone my size?