Not enough sex?

According to glow, a positive opk on the Sunday 6th and my EW CM I ovulated on the 7th.. However my fiancé and I slept together last night the 8th, but he was unable to finish... I am worried that it's screwed our chances for conceiving this month. If my cm had switched to creamy by the 8th does that mean I ovulated already and should be in the clear? Any input is appreciated!