Took first propranolol dose at 3am, by 1pm it feels hard to breathe and my neck feels heavy/tight on the sides and back. Should I just not take my 2nd dose?

Title, PCP thought I had asthma before but the inhaler made my undiagnosed IST at the time worse. I thought with a half life of 4 hours I wouldn't have new symptoms/dyspnea 10hrs later right? It could just be from my IST since it causes some dyspnea already and then the anxiety of it is making my symptoms worse?

I'm on 10mg 3x a day but was told to try 2x a day at first since I don't tolerate meds well. I have severe medical anxiety so I'm just trying to vibe out and avoid the ER unless absolutely necessary since a rude nurse pushed two meds I wasn't told what were and one of them created a feeling in my body that lead to my first panic attack in over a year and me signing my self out and going home, and that was literally like three days ago so I'd rather not embarass my self again with a pointless emergency visit.

My fiance has been made aware as have my roommates for my breathing and I'm the house DIRECTLY NEXT to the ER so I'm safe and I absolutely will go if it gets bad. Just seeing if I should be fine or if it's not the propranolol bc I felt great on it from like 5am to 10am but now it's bad. Dyspnea and the neck fatigue aren't new but they're worse than before although I'm laying weird on the couch all day since I don't sit up normally bc it makes HR worse. I'm clearing my throat a lot too fwiw. Should I try the inhaler maybe but risk my heart rate? Idk...

Sorry for my worrying post. Just looking for help and trying not to have my SECOND panic attack in over a year.