Help / Opinions please!

I miscarried on 12th March and it was completely different to my previous miscarriages, it wasn't that heavy and only lasted a week. 
I had my 1st period there after on 20th April and Glow currently says today is my prime ovulation day. However, today I notice a small amount of brown discharge in my knickers, I put a pad in and there has been nothing since for the rest of the day ... Did anyone else experience this? 
Just looking for other people's stories really rather then just questioning if it's "implantation bleeding". I know everything is all over the place after a miscarriage but I've never had implantation bleeding with any pregnancy (1 healthy 6 year old daughter and 3 miscarriages). If anyone could offer any opinions I would really appreciate it. Thanks so much!