Etopic

I had been on depo for 13 years I got off about a year ago. My periods returned to normal in about 7 months after which were for 7 days after that my period came on for 3 days heavy. Recently I went to the ER bc I thought I had a virus while there they gave me a pregnancy test which came back positive. They gave me an ultrasound which showed no baby or sac. One week later I went to the OBGYN and they said that my baby was in my tubes and that I would need to get a shot which they gave me two. But I can’t help but think if I made the wrong choice bc I felt like I was not far enough along to even see a baby. Now I am left with the what if’s ! Has anyone else felt like this before? Also my period went off on Dec 26th.