Pregnant after period?

Colbie
Ok. I just got off of my period 3 days ago. But it was 8 or 9 days late coming on. I had taken several tests before it came on and they were all very negative. Well for the last couple of days I've been waking up from a dead sleep around 4 or 5 am SUPER nauseated. I've stayed nauseated all day and kept a bad headache. So this morning, to put my mind at ease, I took a test, and the thing was definitely positive. What in the world? It was a normal period! Could I have miscarried and still be just now feeling symptoms and getting a positive test? Or did I just ovulate super late? Or what in the world? I'm going to give it a few days and test again to see if it gets any stronger. But good grief. My husband is going to freak. It took us nearly 2 years to get pregnant last time and neither of us thought it would happen 3 or 4 days before my period was supposed to start. But what's meant to be will obviously find a way 😂😂😂