What's going on?

I got this today and I also had a beta done today because we are doing timed intercourse. I have never had a positive test before 15 DPO and today is only 12 DPO. My beta was negative at 3.7 and it was less than 0.6 two weeks ago. The tech said it may just be getting started and I should come back in 2 days and redo it. Anyone ever have this happen and it worked out? I'm not due for 2 more days.