Breathing issues or anxiety?

So yesterday, I got a little freaked out by a bug and bent my knees and squished my stomach very rapidly. Since then, I feel like I ve been having shortness of breath, and I m afraid I may be bleeding inside or something. I tried to sleep it off to see if it would get better, but it has not yet. Help? Also, nothing is severely hurting, no nausea or sleepiness either. It's just my breathing. And my stomach feels as though I'm hungry, even though I'm not (I recently ate).