why do my burps taste like mint?

Marli • Lottie Mae norm 3-23-20. Liam Thomas🌈 born 4-7-17. Angel baby 5-4-16. Hubby & I married 11-1-14. Have two Pomeranian `babies`.
Prior to becoming pregnant I had acid reflux and IBS. And I've read on IBS and reflux boards about weird tastes in the mouth. Also read about pregnancy related dysgeusia (though I wouldn't call mint a "foul" taste). 
I burp mint regardless if I've had anything remotely mint near my mouth. 
It's not toothpaste. I've gone without brushing my teeth just to try. Didn't change anything. Haven't eaten mints. Often haven't eaten anything. I just burp...mint. And not only does it taste minty but has that menthol cooling feeling as well. 
Am I alone?
Have I lost my mind?

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