How much weight have you gained?

I’ve only gained about 5-6 lbs and I’m 33w tomorrow! I’ve tried so incredibly hard to even over-eat but NOTHING I do is helping. They estimated my son’s weight to be 4.4 lbs but also said it can be off a lb either way. I’m on bed rest for bleeding and hoping I make it to at least 36 weeks. I’m so worried about my weight gain. Anyone else experience this and had a healthy/ big baby?