Thanks for providing more information.
Sometimes people can have what is called a geographic tongue and those findings can actually be normal for them (it's a variant of normal).
The other thing that it may be an oral yeast infection as you have whitish content on tongue.
Other caused may include Vitamin B12 deficiency,vitamin B3 deficiency,herpes viral infection(as you have tingling sensation).
So firstly you should start multivitamin containing B complex.
Also do antiseptic gargles.
Avoid spicy,fried foods,carbonated beverages.
Take metamucil and OTC Simethicone to relieve flatulence(gas).
Take fibre rich diet.
Take OTC Prilosec.
And make an appointment with your doctor if your symptoms'll persist for more than 1 week.
Regarding your bakc pain,you can take OTC Motrin 200 mg every 4-6 hours.
Also do gentle massage with muscle relaxant ointment and apply warm compresses on affected area.
A X-ray/MRI of lumbosacral spine can be advised if pain persists.
I hope this helps.
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