Hard to say exactly not knowing if/when you truly ovulated  but you could test
with an extra sensitive test (the one's advertised you can do it 5 days early)
and know if you got pregnant from the possible ovulation on the 24th/25th
already.  Wait a few more days and you would know if you are from the 29th...
might have to wait 5 more days.  Your symptoms certainly seem to suggest it ;)

Good luck!  (seems like the odds may be about what Elfanie said earlier though
for the other poster - 20% possibly?)

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