I have sex pretty regularly, but don't use protection. He always pulls out and has never had any problems doing so. I am 21 days late for my period and a few days ago I had a spot of blood that I thought may be the start of my period. But, my periods never start of that light and it was just a tiny spot and nothing since. I have had back problems but the past week or too it was worse on some days. Also I have been more dizzy and had a headache and sick feelings like really bad hunger pains. I took a test a week ago but it said negative. Maybe I took it too early? But Tuesday night we had sex and he finished in me. So what is the likelihood of my being pregnant?