Should I meet up with this woman?

So I met this woman on the internet about a week ago...she's 31 and i'm 17. We live a few hours away from each other but we both said we might want to meet up..she's into teens if you know what I mean. We've seen pictures of each other and we both really want to meet up to have some 'fun' so she said I could stay down at hers for a couple of days. She seems quite promiscuous which I don't mind, and she says she's on the pill (I can't imagine she would take the risk of having more children) so she says I don't have to use a condom. but I'm a bit worried about things like std's, in case she has any. What should I do? I really want to meet up with her, should i? And are there any obvious physical signs of possible std's? Do you think the whole idea of meeting up is too risky even if use protection? (remember i am 17 so i can handle myself if anything goes wrong)