The Frenchman collapsed near the centre circle shortly after Tottenham had opened the scoring through Nacer Chadli's seventh-minute strike.
Both sets of medical staff rushed to his aid, with Gomis eventually taken off on a stretcher with an oxygen mask after receiving treatment.
The Former Lyon and Saint-Etienne man has a history of fainting in matches but, after manager Garry Monk offered post-match assurances over his condition, Gomis took to Twitter to do the same.
Gomis posted: "I wanted to reassure you concerning my health, it actually looks much more scary than physically dangerous and I am feeling well now .
"I have been under a great deal of stress and fatigue due to my father health that requires me to go back and forth to France.
"I was disappointed that I couldn't help my team tonight but now everything is back in order.
"I also want to thank everyone for their support and get well messages."
