When to test??

Dannielle
I'm going to visit my friend at uni in Leeds with another friend the day before I am due AF. I've been researching early pregnancy tests as I'm unsure whether I want to go and drink/go on a night out if I could be pregnant. I know it's a long shot, what do you guys think?? Should I take a test before I go? An early detector one or a normal test? Or just wait to see if she comes whilst I'm away??