15 weeks haven’t gained a pound

**I’m going to ask my obgyn about this my next appointment**

I wanted to come on here and ask if any else has been through this where they aren’t experiencing weight gain in the pregnancy.. the baby is measuring just fine. I’ve been skinny my whole life so idk if that might have something to do with it. In the first trimester is was like hm no gaining but now it feel like I should be gaining something by now yet I’ve been the same weight this whole time. My belly has grown yet I’m the same weight