Hug levels and paranoia with the doctor

Hey all,

I got a faint positive on a home pregnancy test March 15th, the day my period would have been due. I was testing beforehand and all negative. My last period was Feb 12th and I’ve been regular since i begin menstruating at 12 years old. Period comes every 32-33 days like clockwork. I’ve been pregnant 3 other times with 1 living. The other 2 I had terminated due to personal reasons with an abusive ex-partner. Those were perfectly normal otherwise.

With my first pregnancy, I didnt go to the OB until I was 6 months pregnant because of my paranoia with health care. Everything turned out to be perfect. Due date was accurate, no health issues. This time I decided to do things the right way and go to the doctor early and I regret it. They did a beta HCG and said my levels are too low (at 48 and the only HCG test done so far) and the vaginal sonogram isn’t showing anything but a half centimeter thicker endometrium which I guess is supposed to be thicker? Unsure. I’m supposedly 5 weeks. Pretty sure I ovulated between March 2nd and March 8th. Probably closer to the 8th. They told me to expect an ectopic pregnancy or miscarriage.

Now I’m extremely paranoid because I’ve never had any issues, I don’t have reproductive family issues. Nor does my spouse.

I personally don’t see how one blood test and one sonogram this early could equate to an ectopic pregnancy or miscarriage or am I paranoid?

I haven’t had any bleeding or pains, aside from minor lower back pain that’s relieved when I’m walking.

Should I switch providers or just wait a few weeks before going back?