TWW !!! - October 2015

Abi
Hey Girls, really need your help.
So - this is ttc month 3.
This month our positive opk was Friday 25th. We dtd'd on tue, thu, fri and Sat.
During this period had good amount of cm, however started getting light twang/pains in lower left (near uterus) on mon and tue on and off. Could it be that ovulation could have been Monday 28 and Tuesday 29 this week? I didn't have much noticeable cm though.
So scared iv missed ov? 
I thought I did everything right regarding dtd.
Will post my opk pic, feeling so desperate and confused right now 😢😢