Tww question..

Has anyone been told or heard that having sex during the tww can hurt your chances of conceiving? I read somewhere that having sex during this time can cause contractions in your uterine wall and release a fertized egg..i have no clue about the probability of this but we are in our 6th cycle trying for baby #2 and every month we are doing something different in hopes that we get our bfp! However I've also read to BD every other day until AF shows just in case you ovulated later than opk and bbt said you did..so confusing 🤦‍♀️