experiences?? (kind of TMI)

alexis
i've had non-stop nauseousness and dizziness. i have an appetite but then i don't. it's seldom that i do. i haven't had morning sickness.. but there's a constant feeling in my belly and i'm cramping but it's no where near time period yet. i have about 16 days until my period (my tracker says) and i've already had my period this month. but my significant other and i had sex on my two last days of my period, and even afterwards and he did cm in me all those times. 
i know this is TMI but i was wondering the possible chances of it being pregnancy.. any thoughts???