at last!!!

Hello all, yes, at last I've managed to understand how to post a message.....(well, I think so anyway!!)
hope its in the right place though???oh well, we'll see!
I'm Jo, I live in Exeter, although my bike has its home in Paignton at the moment. Its not a spanking new bike and not perfect...(yet,,,) but i'm having brilliant fun with it! Only started riding in July but couldn't imagine not being on a bike anymore!
So just thought would say hello since everyone sounds friendly here!
And just a quick question:
Went to London from Devon on friday and all was going well until as got off the M3, started p*****g down...(not nice ) and as got to roundabout, engine kept misfiring and stalled a few times (obviously, even more unpleasant than the rain, especially when stuck up hill in traffic in rushhour.....), someone said it's because the engine got very wet???is that so, is it common, and what can I do about it???
Hope everyone had good wkd

Jo