Antibiotics sideeffeects.?

Hi, I'm taking ERYTHROMYCIN E.E.S 400MG Tablet twice a day for my skin. however ive been having breathing difficulties ever since then i wonder is this normal or not? ive always take the antibitiocs right after meal please help me! thanks!
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Ive been taking them for more or less 10 days now. but i heard that we cannot anyhow stop taking antibiotics?