Still losing weight in 2nd trimester

I’m worried that I’m still losing weight even though I’m nearly 20 weeks and eating really well. I spoke to my midwife about it at my 16 week appointment but she didn’t take me at all seriously (she’s been awful since day 1), and wouldn’t check my weight or take bloods to check levels even though I asked. In the past few weeks it’s getting the point people are commenting on how thin and unwell I’m looking.

Is this normal or should I try speaking to my doctor? Everyone else I know at this stage is complaining about how much weight they’re gaining.