Need quick advice

Hey!!! I have Bpd and anxiety and i am medicated but I can take propranolol when needed! tonight was one of those nights so I took 2 and I think maybe 2 was overdoing it and I probably only needed 1 or 1 and a half. My heart rate is pretty damn slow but im also focusing on it because im anxiously thinking about it. This is absolutely just my anxiety but is it okay to go to sleep!! I usually would text my mom about this but its 4 am and noone is awake right now. My brain is telling me Im not allowed to sleep ot my heart might stop even though im sure thats not rational. Thank you guys!!