Leave sperm in after sex? + other TTC tips

Ok this might be a dumb question, but my husband and I have been trying to get pregnant since August with no luck. I know it takes awhile but I’m wondering if we are doing something wrong?? Any tips would be helpful! Do I have to leave the sperm in me all night after sex? I usually just get up and clean it out lol. I don’t like the feeling of it and am afraid of getting a yeast infection since I get them often.