af is late

Vicky
Had spotting 1week before my period was due only very light only noticed when I wiped lasted no longer than a few hours , period was due 2 days ago still hasn't shown but have been getting cramps for past 2 days , feel very wet(tmi) like a watery discharge .. should I take a test or just wait for af to come?? Sick of seeing negatives ! 
Thanks x