10 Days before Period

Guys, I need help desperately before I just rush off to the doctor. I need help deciphering this:
I'm either-
A: Allergic to Gluten
B: Pregnant
Lately, within the last two weeks, I can't eat anything like I use to. Anything with wheat or flour in it makes me sick and I have to sit in the bathroom for longer than I should normally. I'm nauseas ALL day long. I've been taking Tums almost religiously but they never work. I have IBS and typically I can take them and I feel fine. When I don't eat any kind of food, I feel great, but still nauseas. I've been dehydrated too from not eating nearly as much as I did before. My stomach is SO bloated too. I'm going to attach a picture later. 
ON TOP OF ALL THAT I have been experience VVVVVVVVVERY slight spotting in my panty liners the past two days. Only like one-three drops per day and it's a mix between a light pink and brownish color. 
These symptoms are really confusing and misleading. I know this post is long, but I need advice. I took an $0.88 test yesterday but I forgot that it's still too early to tell.
Thank you!
And I'm sorry about the TMI. 😓
Side view
My view of my stomach.
TMI: discharge