Ovulation testing post missed miscarriage

Still waiting for my period after a D&C for a missed miscarriage almost 6 weeks ago.  I bled for nearly an entire month afterward. 
I've been anxious to get my period back, and got impatient and curious after reading about all these women that got their rainbow soon after their MC, sometimes before a period or on their first cycle.  
 I've never done ovulation testing - but on my doctors recommendation picked up a clear blue advanced digital (blank face, blinking smiley face or solid smiley face) and decided to test before my cycle returned.
I tested for the first time on Thursday afternoon, and got a blank face (no fertility/ovulation detected) - figured I had already ovulated and AF was coming, or that I wasn't going to ovulate til after AF, so I didn't test again til almost midnight on Saturday night 2 1/2 days later, and much to my surprise got a high fertility blinking smiley face.  I retested 11 hours later, this morning and it was a solid smile - peak fertility.
Is it possible I'm ovulating nearly 6 weeks after a MC? That seems so strange.
Also - when I ejected the sticks, the second line doesn't seem particularly dark on the high fertility reading and the peak fertility one had a big blue smear over more than half the test- does that matter?  I know you're not supposed to read them by that- just trust the digital reading but I'm brand new to this and it seemed strange.
Thanks for any help or advice!  Hoping for rainbows for all of us soon.