Late ovulation or + opk as hpt??? what are my chances..please read!!!?

That depends how long your cycle is. Ovulation should ideally occur at least ten days before your period so an opk should be positive at least 11/12 before. 4 days before ovulation can result in pregnancy but it is unlikely. On the other hand there certainly is evidence that opks are positive during pregnancy. Good luck and baby dust! What a wonderful belated birthday present that would be!