Confused.

Michelle? • I have a 3 year old son and just got my bfp for baby #2!!!❤️❤️❤️
So if I had a positive opk October 28th in the evening (had a negative that morning) does it mean I could have actually ovulated the 30th? 
Also, how many days does it take to implant? 3 days late for my period and it's driving me nuts. Hoping i ovulated and implanted late and I still have a chance haha but so far bfn's and 2 extremely faint positives. Or so I think.