m/c started 8/13. ovulated ten days later?

m/c confirmed by falling HCG levels. 
five weeks along. 
started bleeding 8/13, for four days. 
ten days later on 8/23, left side ovulation pains. I get them each month- very familiar. my calendar says I shouldn't ovulate until 8/27. 
possible to ovulate ten days after a miscarriage?