Ovulation question. Possible?

I had a medical abortion 6 weeks ago. No judgements here, this is not what my post is exactly about. I had a period and am now on CD11. I took an opk for the hell of it and it's a total positive. Took a pregnancy test just to make sure all HCG is gone and its negative. Could I really be O'ing this early?! My normal cycles prior I didn't O until about day 16-17. 

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