I think I ovulated late. Please answer!

Heather • Pregnant #2 Miscarried #1
All this time I'm thinking I'm 11dpo and I think I'm actually 8dpo. Yesterday I had burning sensation in lower back buttock area. Cramping on and off and dull achy back. Could this be implantation??? Never had the burning feeling and it only lasted about 15 mins. ANYONE? Is there any hope?