If you did already ovulate, your chances of getting pregnant are probably about the same as if you'd done nothing, but much lower if you hadn't ovulated. (And ovulation doesn't necessarily occur at the exact same time every month...it can be advanced or delayed a bit by various random factors.)
As for your feeling off, I think it's nearly impossible to have symptoms of pregnancy before about 1.5-2 weeks after conception, because it takes a week or two for the fertilized egg to implant. Pregnancy tests usually can't give a positive result until 2 weeks after the embryo's conception at the earliest, and I heard as many as half of embryos naturally fall out at the end of the cycle. Which may be why the pregnancy rate of women who use no birth control is only 85% per year, as opposed to something higher.
no subject
As for your feeling off, I think it's nearly impossible to have symptoms of pregnancy before about 1.5-2 weeks after conception, because it takes a week or two for the fertilized egg to implant. Pregnancy tests usually can't give a positive result until 2 weeks after the embryo's conception at the earliest, and I heard as many as half of embryos naturally fall out at the end of the cycle. Which may be why the pregnancy rate of women who use no birth control is only 85% per year, as opposed to something higher.