Weight and not eating

Winter
Anyone having trouble eating still? I am 18 wks 4 days, and I eat a small amount and can't eat any more because I feel full, then 8-12 hours later only then start to feel hungry and eat a small amount then done. Over all I have lost 12 lbs since my first appointment at 8 wkd 4 days. But after fluctuating for several weeks with gaining and losing some, since my last appointment December 19th I have lost 10 lbs. Yesterday I had half a bagel at breakfast and 12 hours later managed a small bowl full of veggie soup. The day before that I had a fruit drink I made myself (OJ blended with peaches, strawberries, grapes, and pineapple, with some ginger ale to make it more liquid) and 12 grapes. Then 10 hours later 1/4 cup of cooked rice. I left a message with my doctor but wondering if anyone else out there has a similar issue. I wonder if the baby is already smooshing my stomach making it hard to eat. Not sure but this is not how I planned to lose weight!!