I had my tubes tied and burnt in 2005
I missed my period and have fuild in
My breast should I worry

The chances of pregnancy are less than 1%, but they do exist. An egg has to work it's way past the burned spots. The sperm has to connect. Almost impossible, but possible.
Not all tubals are the same either: some are burned in 1, 2, or 3 places on each tube.
Your period could be late, your breasts swollen as usual before your period (not true for you?), or it could be something unrelated. You won't know until about 2 more weeks go by. Worry can stop your period too. Then you start doing home pregnancy tests (HPT).