My sister's friend had a tubal and 10 years later she found out she was pregnant with twins. So it definitely can happen since there are no real guarantees.
I had a tubal 5 years ago and at one point experienced pregnancy symptoms: losing/gaining weight, missed period, nausea, and feeling tired all the time. I took a pregnancy test and it was negative, then went to the doctor and found out I had a sinus infection. So like reney70 said, go get a pregnancy test. If it comes out negative, it might be something else.
Also in the last 2 years, i've began to experience tenderness in my breasts about a week or two before my period. So that could may be a reason for the tenderness.