I think I've given myself Chron's Disease. >I have

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I think I've given myself Chron's Disease.

>I have had IBS for a few years in conjunction with several food allergies including gluten intolerance.
>Been wageslaving from 3pm-12pm so not enough time to go grocery shopping for healthy food.
>Been eating McDonald's twice a day for almost a week.
>3 days ago on my day off I eat McDonald's cause I'm too lazy to go shopping and later my roommate brings pizza home so I eat 3 or so slices.
>That night get horrible explosive diarrhea and throwing up every so often.
>This continues for two days
>Go to doctor, she gives me meds for the nasuea and shits.
>Nasuea meds do wonders, and the diarrhea ones work ok but still shit explosively every few hours.
>Next day appetite is almost non existent despite only eating two bananas and a handful of crackers over the last 72+ hours
>Lose 5-10 pounds in same amount of time
>Still having explosive diarrhea

So what do you guys think, have I given myself one of the most life altering diseases due to my own laziness and eating what I know I shouldn't? Or will this likely clear up in the next few days?
Pic related, it's my shit on day 2.

Also had some really bad pain in my chest I assume was from gas last night that lasted for 5 or so hours until I took 3 ibuprofen.