Kind of nervous.. anyone have an idea?

So I'm kind of nervous. I got Nexplanon a month ago, and was given a blood test. The blood test showed my HCG count was less than 1.

I haven't had sex for several months, and the blood test took place at least two months after sex. However I've noticed a big increase in discharge, and I heard this can be a pregnancy sign? Its just watery mostly. It's not enough to require a panty liner but it's enough for me to notice it more than usual.

Any thoughts?