Most practitioners and sources I’ve consulted say 25-35 is the normal weight gain, each of our bodies varies though! If you were underweight before conception your body may be telling you to make more!
I’ve probably gained as much or more than you, don’t worry. I think the stress does it a lot for me…with her father not being very nice, as I believe is your case too unfortunately. I eat when I’m hungry, so I assume baby is hungry. It’s better you eat and gain too much, than gain to little and endanger the little one.
Do you plan to breastfeed? I definitely do, which should help with the weight loss thank goodness.