lol
do you know for sure you ovulated then?
IT is definitely possible, although

the day before o is a super great idea too....
it only takes ONE time to get pregnant! (as i found out when i was 16!!!! lol)
So i think you have a very good chance.
When will you start testing? im horrible at holding out and start at 6dpo IF i have internet cheapies.
I went through about 15 last cycle.
Im awful, i know, LOL
Welcome to the 2ww
your symptoms sound great! (specially the twingy tummy!)