Help 😩

Ca

I went to the ER today with slight cramps and UTI symptoms cause my doctor couldn’t get me in yet. They tested my HCG levels and said they were low so in two days I have to get blood work again. But they said if it doesn’t go up I could be having an ectopic pregnancy or I’m earlier than they thought since they couldn’t see anything on the ultrasound. My cervix is nice and closed and I haven’t had spotting or bleeding. I need advice!!