You are describing the symptoms of Gastroparesis, which Lyme/Bart/etc. can cause. I have this so severely right now that I'm again unable to eat and on TPN (food through a PICC line).
You can get medication to help - Cisapride (not available in the US), Reglan (available by prescript
ion) or Domperidone (not available in the US, but can be purchased online or from a compounding pharmacy in the US) help make the stomach contract more normally and help counter the nausea.
Zofran, Phenergan, & Compazine (all by prescript
ion only) can help with nausea. Ginger tea and peppermint essential oil are also good for nausea, and also the wrist acupuncture point stimulated by the wrist bands mentioned above is good for nausea.
I was using Domperidone before my current Gastroparesis flareup. Now I'm on Zofran IV and it is barely holding the nausea away...may need to add something else (Ativan or Scopalamine).
A skilled homeopathic practitioner may also be of help. One such practitioner helped me during my first Gastroparesis flareup (before I knew I had Lyme; was a teenager at the time). My family moved to the other side of the country or I would be seeing her now for my current situation...
Also, eat low-fat, low-fiber foods. Fats & fiber aggravate gastroparesis. I know, this is opposite to the Lyme diet...but it is more important to get nutrition than to worry about
sugar and starch when the stomach is like this.
Also, if you can tolerate fresh vegetable juices, they can be extremely healing and immune-supportive.
A liquid diet in general is usually more well-tolerated by those with Gastroparesis.
For more info on how Lyme/coinfections affects the gut, see
thehumansideoflyme.net/viewarticle.php?aid=62Edited to add: Don't use aloe vera unless it has been purified. Many aloe vera brands leave a very irritating substance in the juice that is not good for mucus membranes.