First period after m/c

Nikki
Hi ladies. I had a natural miscarriage on 7/4 at 7 weeks. At my follow up on the July 13th, my doctor said everything expelled and all tissue was gone and my uterus was healing nicely & I would ovulate in a week or so. He also said to expect my first period "early August." Well last night, 8/5 I had some spotting, so I thought I was starting my period. I woke up today with nothing but a little discolor was discharge.. And nothing else all day. This was my first pregnancy and first m/c and I've always been really regular, menstral cycle wise. 
I'm wondering if this just normal spotting before a period, or something else. My DH & I had unprotected sex a handful of times, so I was thinking maybe even implantation?? But I also don't want to get my hopes up. 
This whole process has just been so emotionally draining and frustrating! I hate not knowing what to expect, but I also know I just need to trust my body. 
What has your first cycle after loss been like?