sulphur burps, tummy ache, and 39 weeks

Hayden
Tonight's been weird. My throat is killing me, had a kid in my class with confirmed strep and mine has been sore all week. 
Now, every time I got up tonight I have burped sulphur burps and my tummy hurts. 
My daughter got giardia one summer after swimming and had sulphur burps but I haven't gone anywhere different although I am a teacher...
Any ideas or suggestions???