Im36 have 3 kids 3yrs ago i had a tubal ligation,my last cycle was oct 27 i was sexual during that time period, my cycle has been gone for 5days,yet im having back pain,headaches,creamy white discharge with no burning or itching,breast tenderness,blurred vision,nausea ,cramps in my legs and pelvic area,is it still possible i could have gotten pregnant ?