Yes, tender breasts can be a pregnancy symptom, but they can also mean a load of other things (a pre-menstrual indicator, ovulation, poor latch).
It is handy to have lots of cheap test strips around if you are an over tester like me. Theses are great: http://www.early-pregnancy-tests.com/prtest.html
It is handy to have lots of cheap test strips around if you are an over tester like me. Theses are great: http://www.early-pregnancy-tests.com/prtest.html