I Had My Tubes Tied About 2 1/2 Years Ago.

I had my tubes tied about 2 1/2 years ago. my last period Was about 3 1/2 weeks ago. It only lasted two days the first day I bleed a little the second I only slightly spotting. Since then I've been showing some signs of pregnancy I've been getting nauseous throughout the day it just comes out of nowhere, i've noticed my breasts are tender they're getting little dots round the Ariola and also blue veins throughout them. And amy sex drive has gone up considerably these are just a few of the symptoms I've been having is it possible to still get pregnant while having my tubes clamped and what are the odds of it being a tubal pregnancy