conceiving after D&C

I have a wonderful 7 year old and I fell pregnant August 2015 - I miscarried at 5 weeks

I fell pregnant again November 2015 and that was a blighted ovum which I medically induced a miscarriage at 9 weeks.  I then fell pregnant April 2016 which was another blighted ovum that I medically induced again in May.  In August of this year after that last miscarriage my levels still weren't 0 and they did a sono and noticed some abnormal blood flow which they called trophoblastic disease (caused by retained tissue) I was having normal cycles since May which is why there was no alarm.  I was scheduled for an emergency D&C September 8 and had a cycle September 22.  It was a normal cycle 28 days after my one in August lasted the normal 5 days.  So we decided to try again... I've been taking my prenantals, baby aspirin, and extra folic acid everyday religiously.  We have never had an issue conceiving before and I've been testing since Sunday since AF is due today... this morning yet another BFN; well after I got home from work I went to the bathroom and had blood tinged mucous (kinda sorry) so she decided to show her ugly face...

Has anyone ever had an issue after a D&C before?? I'm feeling hopeless here; like maybe we aren't meant to have another child.