late period!!

Im 3 days late on my period, I've had cramping for the past 5 like if I'm gonna start my period but then I don't, the cramping is weird is like a shooting cramp, sometimes on my lower left side others on my right side and it radiates to my legs, my nipples are sore but nothing unbearable, I've been having migraines lately which I have never had before. Other than then normal headaches, but this time they're almost unbearle, i had clear sticky discharge 5 days ago and it hasn't stopped sometimes it's just less others it's a lot, which made me believe my period was starting but nothing. The cramps pains come and go. I do have nausea randomly but sometimes it's when I get the migraine, could I be pregnant ?? I just don't know anymore, should I test !?