I'm wondering why I had to travel 3 hours for a second opinion as I always had to. I had an abdominal ultrasound done…

I'm wondering why I had to travel 3 hours for a second opinion as I always had to. I had an abdominal ultrasound done where Im located because the doctors tried to figure out why I was so sick and in pain the tech said I wasn't pregnant and she didn't see anything not even a sac and she said I'm not sick. I want answers if I'm going to pay a high hospital bill. I drove to Memphis Tennessee from arkansas for a second opinion because I knew something was wrong with me and the transvaginal ultrasound showed I was 4 weeks pregnant when I was afraid. The obgyn said my body is preparing itself. Doctors rely on tests to much but there are women out here such as my mom had negatives until 6 months. My sister went into labor because the doctors did not believe she was pregnant at all they kept sending her home telling her she's crazy and her tests are negative and it's impossible. They told her she's preparing for her period. I had no clue I was pregnant I was just sick and in a lot of pain. I don't take every prescription the doctor writes. I researched and find its many other women who knew they were pregnant but the doctors called them crazy relying on pee sticks #mypregnantstory