I Had Motions And Kind Of Food Poisoning And At

I had motions and kind of food poisoning and at the same time I can't breath properly which is due to fast heart beat I guess . My doctor gave me medicines to improve breathing etc but why is it like when I drink syrups( can't eat medicines) my heart beat fastens and can't breath properly . Doctor told me it's oral infection. I'm 13 years old and wanna know is there a relation between rapip heart beat and breathing problem