late period, positive opks ?

Hello everybody. I'm new to this account and it's been a while! I just have a few questions. I gave birth to my daughter In February, so im almost 7 months postpartum and my husband and I have been trying to conceive baby #2. This cycle has somehow been sooo messed up. I have had cycles ranging from 30-35 days for the last 4 months. This cycle however has been 39, no signs of my period but I have had positive opks for the last 3 days. Do you think this could be a crazy cycle and I'm ovulating way late? I have also taken hpts and they've been negative except yesterday was very faint after some time which leads me to believe it was just an evap. today's was negative. I also have a cloudy, stretchy cm. So my questions are 1. Does it sound like I'm ovulating late? 2. Does this sound like a possible chemical miscarriage? 3. Do opks usually stay positive for 3 days? 4. Would this cycle be normal for a postpartum mom? Thank you so much, any comment is much appreciated.