This reminds me a great deal of how I was whenever I went out in the early days, which is a little over a year ago but it seems like ancient history already. I have ended up settling on the fact that I really don't know what anyone is thinking and unless they come right up to me and say something (and no-one has yet) I will assume they are checking out the athletic 6 foot blonde.
I found that the alternative was that I worked myself into a right state and ended up bolting for an exit (any exit) as quickly as I could.
Relax, enjoy the attention, you're gorgeous.
Rosie.