weight at 14 weeks

Lona
I'm almost 14 weeks along and since I found out (week 4) I have lost 2kgs (around 4 pounds). I lost them quite soon because of the nausea. Is it weird that at 14 weeks I haven't gained any weight at all yet? Should I be concerned? I have lots of nausea and vomit every 2-3 days, but I've been trying to eat more. Still no weight gain 😔 I know it's just a few pounds we are talking about, but do you think I should be worried? Thanks a lot to all!