No appetite to eat after 1pm 😭

This is my first baby and this little cutie is really weird. Mommies, the baby won't let me eat after 1pm. 😭 Only morning, I will search for food to eat. After 1pm, it's like a switch off - NO MORE EATING. I'm concerned. I'm currently 6 weeks and my nausea is on and off and I always have gastric cause of this problem. What should I do? #pleasehelp #firstbaby #pregnancy #advicepls