Weight Gain

I’ll be 17 weeks pregnant this upcoming Thursday. I’m currently weighing about 5 pounds less than pre-pregnancy and haven’t gained any weight. I was put on meds to help stop the vomiting and I don’t really vomit often much anymore. I feel as though I’m eating, but I know it’s probably not as much as I should be eating… I don’t have a crazy appetite and eat what I can when I can. Does anyone know what they might do for me going forward? Is it just, eh whatever or are there steps they will start taking soon to help me gain more weight? This happened my first pregnancy (different doctor) and I lost over 15 pounds and didn’t gain anything until later in 3rd trimester. I suspect I had HG and my then doctor didn’t do anything. Towards the end she panicked and started doing growth monitor checks on baby. I switched doctors for this pregnancy and my current doctor didn’t love hearing this. She said that at 28 weeks we are growth monitoring as a just in case because of my history. Anyone else having a similar experience? I know I’m probably just being overly nervous but considering my history I want to prevent any issues from happening.