Help a girl out

Hey ladies! So, I'm 20 and I've never gotten a vibrator before. I know I can get one online but I go to a Christian college and I'm scared they would somehow find out if I ordered one and got it sent to my CPO box. I think my best option is to go to an actual sex shop, but I haven't exactly told any of my friends (again, Christian college) that I masturbate, so I'd have to go alone. Is it safe for a 20 year old girl to go to a sex shop alone? Or should I just try to find something at Spencer's?