I get nauseous if I don't eat on time. I recommend you eat small portions often -- even when you don't feel like it. If you haven't already done so, please switch to organic food. I found conventional poultry and produce often made me nauseous when I ate it. You never know what is in conventional food or whether it is genetically modified.
Rather than drinking hot tea, may I suggest just boiled water? Aside from being incredibly cheap(!), it's extremely soothing. Before I discovered Heather's diet, I used to drink boiled water with every meal - during and after the meal -- and I found it really helped sooth my stomach and enabled me to tolerate the food better.