OVULATION HELP

It's my first month of ttc and I'm testing my ovulation everyday after period today I got a strong blue line... since I finished my period 15th Dec to 19th Dec ... i have been having sex every other day. This is our rest day ! From sex hehe but there is a strong blue line? Will my partners sperm be swimming to the egg eveb if we haven't has sex on the STRONG BLUE LINE lol xxx