Pregnant after miscarriage

So I had a miscarriage on December 3rd. I bled until the 7th and I took a test a week from the 3rd. And it came back negative. I took another couple tests the week after and they were both negative. We had sex on December 10th and the 15th. I took a pregnancy test yesterday and I looked like there was a shadow. But I chalked it up to like eyes. Today I took one and it was positive.. I got a different brand and it was also positive. Has anyone had a pregnancy test come back pretty strong this early after a miscarriage? I messaged my doctor. I will attach the photos if I can!