Ovulation sometimes be experience as a lower abdominal pain but in most cases, it can’t be felt. You can predict ovulation with an ovulation predictor kit and by measuring the body temperature. One act of sexual intercourse during the fertile days of your cycle (days around the ovulation) is usually not enough to achieve pregnancy. You should have sex as much as possible (a few times per day) in order to increase your chances of pregnancy. Sluggish, nauseous feeling and sleepiness are not evidence that you’ve “achieved your goal”. You will have to wait until you miss your period, a pregnancy test reads positive, and you confirm the presence of a fetus with an ultrasound before you can celebrate conception.