My period ended Dec. 31st & I had unprotected sex 6 days after period ended. Today is almost 2 weeks after and I should get my next period Feb. 1st (I have a 38 day cycle). Ive been having pulling or tiny cramps lower abdomen especially at night for 2 nights already and im sure its not ovulation cramps I never get them. When should I test in a couple days or next week or after feb.1st if I miss my period? Because I heard that some women take it 2 weeks after unprotected sex and it comes out positive!