16 weeks & 5 days

Ro • Surprise excited!! Enjoying my 1st pregnancy due to be blessed with the best of both 🌎's... B/G twins 💙💗!!!
I am currently expecting 2 bundles of joy and I've lost a total of 10 pounds instead of gaining. Is this normal and will my twins be ok? Has anyone else been think small with twins? I really don't know what to expect.