Hi Grams,Welcome to the Healing Well Wrapped Club! I'm a grams, too, and am actually watching my two and a half year old as we speak! This is a great place to get information and support after your Nissen surgery. I had mine done four and a half+ years ago, and can speak from experience.
I didn't have the white coating after surgery, but have had it several times, as I take inhaled steroids, which can be a cause. I found this online:
Thrush and Yeast Infections
You may notice a white, cottage cheese-like coating on your tongue after surgery. Your tongue may also be very red and inflamed. Most likely you have thrush, which is a yeast overgrowth in the mouth. Often, this is due to large amounts of antibiotics taken before surgery. Call your primary care doctor if you have an oral infection or a rash on your skin.
Taking Lactobacillus acidophilus in addition to following the regimen prescribed to you after surgery may help prevent thrush.
Here's the link where it came from: http://www.ucsfhealth.org/education/recovering_from_bariatric_surgery/ It's not a Nissen site, but the Nissen is stomach surgery and shares many recovery issues with bariatric surgery.
Be sure to call your PCP and report the thrush symptoms. You're not alone in getting it post-surgery. I've read other posts here with similar issues.
As far as "reflux" symptoms, take a look at my response to oldnurse regarding perceived reflux.
https://www.healingwell.com/community/default.aspx?f=45&m=2817312
You don't have to worry about the reflux sensations. They're very normal.
Again, welcome! Keep asking questions, as there are quite a few wrapped friends here on the forum!
Happy healing,
Denise