Fluid in uterus

So I miscalculated and thought I was 6 weeks when I am actually only 4 weeks so I have been going to the doctor to get some testing since they thought they would of seen the baby by now, but in fact I’m only 4.

ANYWAY, the doctor said my levels keep doubling at a normal speed but the only issue is he saw some fluid in my uterus, should this be worrisome? Or is this normal?

Thank you in advance for any advice

🙏🏼🙏🏼🙏🏼🙏🏼🙏🏼🙏🏼🙏🏼🙏🏼🙏🏼🙏🏼🙏🏼