Possibly pregnant?or late.

I was supposed to start the 2nd,normally I start on the 5th.its now the 6th but I've felt like I was going to start ie:cramps back ache and been emotional I am a crier so if I see something sweet or sad I cry. But I haven't started.my cycle is 30 days .also I'm drinking way more water and peeing all the time.o practicly live on the toilet. And I don't have a uti