Hello Joanne
I noticed that you hadn't received any responses and didn't want to read and run! My peri started at about 40 though my mother and grandmother had both gone through very early so it wasn't entirely unexpected. Mine just lasted a very long time!
There's lots of information on this site about what you may expect but I would say that we are all unique and experience peri differently. You may be one of the super lucky ones who fly through symptom free. Please don't be alarmed at some of our horror stories, remember most of us have posted on here as we have experienced problems.
In order for someone to help why don't you tell us a little about yourself, i.e. what symptoms you are experiencing that took you to the doc. Did he suggest HRT or any other treatment plan?
Have a browse around the site and ask away if you have any particular questions. There's always someone around to help!
I wish you well x