Every night anxiety and nervous energy

Hi my name is Calmleigh. Quite a pun I know considering I am recovering from panic attacks and anxiety. Basically about 6months ago I had a serious panic attack and I didn't know what it was back then. And it scared the crap out of me. But I saw a therapist and read books git advice went to the doctors etc etc and it all came down to one thing. ME!!! I has to deal with it yes I'm no alone but it all comes down to you. So I've come a long way and now have nervous feelings I'n my belly and mild anxious panic attack feelings but I'm slowly dealing with them by acceptance and realising they are part of me. The bit I don't understand is why now they come between 5.30 pm and 8pm and now it starts as a nervous feeling and then escalates but my accepting it makes it go away slowly. I also get a stuffy nosedoes help my breathing and also I've been diagnosed with a bent septum and am having an operation I'n the next 8 weeks so as I can breathe Ptolemy my only question is why do I get a stuffy nose and also why do I now get these feelings of nervous energy and anxiety between 5pm and 8pm??? Any answers would be appreciated thank you Calmleigh.