Why do I get stomach ache before I go the beach?

Been a nudist for about 1,5 year now and went to my local nudist beach lots of times. Still every morning I wake up and think "My, lovely weather, I think I'll go to the beach." I get stomach ache. It's hard to eat and concentrate. Why is this? I'm confused. At first I thought it was just because I was nervous but I've been there sooo many times now, I don't understand.
Any ideas...?

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RE: Why do I get stomach ache before I go the beach?

It might just be an apprehension. No matter how many times I speak to classes about nudism, I still get nervous.

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RE: Why do I get stomach ache before I go the beach?

I see. Thanks. Thankfully, the ache goes away as soon as I leave the house. :)

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