What are the chances of being pregnant?

my last period was the 22/december. at this cycle i stopped taking my contraceptive pill. i am now due my next period the 18/january. i had had unprotected with my boyfriend since then, many of times, around ovulation too. i am now feeling nauseated by familiar and strong smells, im exhausted most of the time, my womb area is bloated/swollen, i can feel popping sensations in my womb(read before that its the baby burrowing), i get the odd feeling of heaviness in my womb(pressure), i have a lot of mucus discharge from my , my are tender and a bit sore, i am beginning to urinate a bit more often, when i sneeze my stomach/womb area twinges, if i make sudden movement it pulls and my mod swings are really bad. could i be pregnant? answers please, A.S.A.P!!