Ovulating after miscarriage

Lana • 34🖤 Mom of 2 👫 🖤TTC#3 🤗💜

Please someone help. I miscarried last week 1/27/19 at 4 weeks, it was my first one, I wasn't sure if I miscarried at first but I passed alot of clots and all of my symptoms disappeared overnight. . I bled and had bad cramping for about 3 days. I took a digital, Walmart cheapie and a frer after I finished bleeding and they were all negative. Of course I want to try again. Is this ovulation test really positive so soon after the miscarriage? Has this happened to anyone before and they fell pregnant again?