<human>: Can you provide a brief rundown of the text in within 3 sentences?

Here's some backstory:
I ended up developing an allergy to wheat (not gluten) over the course of the last year (among other allergies), so I cut out the wheat as my GI specialist recommended. This was back in April. At the time I weighed about 140 lbs, I've always been pretty thin at 5'9". In the time since, I had not been frequently checking my weight, as it has never been an issue for me. I had been working out a bit more frequently since April because school wound down and I had more free time. 

In late may, I began having frequent diarrhea about 5-6 times a week, usually once a day. To counteract this I began taking a probiotic and cutting out all caffeine, but the symptom continued. 

At my followup yesterday I was quite surprised to learn that I had lost enough weight to put me at 128, which is very concerning to me. I had not noticed myself becoming thinner, and I have been eating as regularly. I suspect cutting out all the carbs and calories I used to get in breads and pasta (some of my favorite foods unfortunately) being absent may be a catalyst but I can't confirm or deny that. I find this occurrence disturbing and was hoping anyone here had any advice or a similar experience. Thank you
<bot>: lost 12 in 2 months, went from 140 to 128. Cut out wheat around the same time due to newly developed allergy