I got my tubes tied 3 1/2 years ago and all my cycles up until now have been pretty normal. I got cramps yesterday. After using the bathroom I wiped and it was some slight pinkish mucus like stuff on my tissue. Today I wiped its some clear mucus like stuff... not pink anymore at all and cramps are kind of faint. Is my cycle changing? I will be 28 next month... or could I possibly be pregnant?