I am confused too.....
I had quite bad pains last Thursday which prompted me to do a OPK test & it confirmed my thoughts that I was ovulating (or very close to), but for the last 3 days I have had the pains as I said before & today have started having lower back pain on the same side. I rang the fertility clinic to ask about these & didnt really get much advice, just to wait and see what happens - EASIER SAID THAN DONE - which all of the ladies on this site would probably agree with!!!!!!!
So I will for the both of us & think too!