Im 10 dpo , I think I O'd on the 15 .. and I had umprotected intercourse on days 10 , 13 , 17 , and 19 .. My symtoms are tender nipples , frequent urination , some queasiness in the morning but i never threw up , im always tired even during the day , i been pooping alot lately (TMI) i feel so bloated and i feel mild cramping and some twinges and pressure especially at night .. my period should be here on the 31 of august .. could i be pregnant ?