I am 36 years old with 2 children. I had my tubes tied about 6 years ago. My period is regular and it always on time 21st of each month. My last period was in Nov 06 and it is now Jan 07. I am over due by 3 weeks, did a preggy test 2x and they were both negative. Have not been to the docs yet. Is it still possible to get preggy after your tubes has been tied?