My fiance and I have unprotected sex and my menstrual came twice last mth about a week apart. We did this again earlier this month but he did pull out and two days later I started having cramps like my menstrual was coming BUT I wasn't due for another 2weeks. I started having headaches, acid reflux (at night) occasional heart burn, extremely gassy, always hungry for specific foods, insomnia at night, lower back pains, queasy but not throwing up and I don't have soar boobs. A few days ago I guess my period came but it was less bleeding than usual and spotty. I took a test last week and it was negative, could I be pregnant?