Would The Day Of Conception Be The Day Of Follicular Rupture?

hi my age-25 running ,height 5.3",weight 69.5 kg , m 8 weaks pegnent ,my 8th weak complete today 4th may.my folical rapture date is 21 march and we had sex also on 21 march then on which date i concive according to my 8th weak pregnancy it is 10 marchthan how it is possible