7 Weeks after D&C and still no AF!?!

So I had my D&C 7 weeks ago today after our baby boy had no heartbeat, measuring 11 weeks at our 12 week ultrasound. My HCG levels finally dropped to 5 over 2 weeks ago and no AF here yet. I’ve been doing ovulation tests this week and they have been getting slightly darker each day and very close to positive, but then last night’s ovulation test was slightly lighter. I don’t know what to expect and was wondering if anyone had any input? I just want to move on and try again as soon as we can! This was the hardest mc yet for me! I have 2 beautiful children and we’ve been trying to complete our family with one more for 2 years now with 3 chemicals, a blighted ovum, and 2 miscarriages with no answers as to why as all my testing has come up normal.