Why does this happen every Panic attack?

Is it just me or does anyone else get this sudden urge to vomit and desperately need to shit during their panic attacks? I'm also having a weird thing where I cant see properly, like my eyes go all funny on me. Is this normal?

Cause its happening all the time to me and I'm struggling to handle it. I'm on medication to help now after chatting with my doctor but it feels like the meds are causing things to be just as bad.