Trying to figure out if I might have Celiac's

My symptoms include: headaches/migraines, gas, constipation mixed with diarrhea, I have a slight rash that is on my forehead near the hairline, it's like raised up scabs, I get stomach cramps, I am almost always hungry, joint pain, and I am always tired.

I hope I am not trying to make something out of nothing, but it would be nice to figure out if something is wrong.

Please help. Thanks!

If you're going to try a gluten free diet, you cannot have pop tarts. Even a little bit of a poptart. See if you can stay away from ALL gluten for at least 2 weeks.