Hello. After reading your query, a conception does not seem likely. However you need to be more careful in the future, as you may not always know if seminal fluid has entered the vagina. I do not know your menstrual history, but if your period is late, wait for a week and then take a pregnancy test just to be sure. Vaginal discharge does seem noticeable around ovulation time and its normal. If you have too much tiredness, and feel the discharge is a lot with itching and smell, get tested. I would ask for a hemoglobin check for anemia, along with a complete blood count and sugar levels. Hope this is helpful. Take care.