Can an upper endoscopy/EGD procedure in any possible way make heartburn/GERD worse?

The reason I ask is because I recently had an EGD and was told I had GERD. However, I never had any serious or noticeable symptoms prior to the EGD.

For 2 days my throat hurt after the procedure which I understood may happen, but after that went away, suddenly I noticed very bad heartburn symptoms which I had never experienced prior to the upper endoscopy.

While I do believe that I may have had GERD, probably for many years, I am 100% sure I did not have symptoms as bad or dramatic as they are now after having this upper endoscopy procedure.

So my question is can an upper endoscopy in any way, however unlikely irritate or make GERD worse?

I am a 38 year old male.