High HCG levels, could it be twins?

Natalie
Hi everyone! So yesterday I got my blood test results back from the doctor that I had done when I was 6 weeks (I'm now 11 weeks) it took so long because my doctors was closed for a month and a half right after I did the blood test which was annoying. Anyway, my doctor went over my results fairly quickly and pointed out the things that were a little high and need to be re rested for (like my thyroid) but he never mentioned why my HCG levels at 6 weeks was so high... 16,500 mlU/ml to be exact. I've been reading up on line and apparently this can indicate twins?! Twins run very strongly in my family and I'm yet to have an ultrasound. So is there anyone on here who is pregnant with twins and had a similar HCG reading?