kittiekittie, please go back to your doctor and talk about your concerns if you're not sure about taking them. Your doc knows much more about your situation than we do, and has prescribed them for a reason, but you can always go back and talk more about it. We can share our own experiences but I don't think that's enough for you to base any decisions on.
For what it's worth, I took propanolol 40mg a day (one dose) for 2 weeks during a period of very bad anxiety. it was enough to give me some relief for a couple of hours, which meant I could then do exercises to help me manage the anxiety - without it I could hardly breathe, let alone try the deep breathing exercises I needed to do.
I'm in the UK and quite a few doctors here (like mine) take the approach of fairly low level, short-term medication to allow you to establish other coping methods. At the time I didn't appreciate that, but I do now.
I was afraid because the info with the tablets said one possible effect was hallucinations, which I tended to get already and dreaded. I never had them, though. I didn't have any bad effects for the two weeks I took them. They got me through a really bad time, but I wouldn't have liked to rely on them alone for longer. Visualisation and deep breathing (for more than 10 minutes, timed with a clock) have done much more for me, without any risks. But I needed the propanolol in order to get to a place where I could start doing those other things.