the best way to know if you are pregnant is to wait to weeks and see if you get you aunt flow and the take a test we dont have symptoms that earlie on as you said ovulation was yesterday which mean the egg has just been released and travelling down your tubes most men know when they do ejaculate but some time we can get pregnant from Pre-cum ... (Pre-come is a small amount of fluid that leaks from a man's penis during foreplay and before actual ejaculation. It often contains sperm, therefore you should always use a condom as soon as the penis is erect if you are protecting against STD's or pregnancy.)
i found this answe on the internet Quote:
When a male is stimulated and has an erection, while his penis is being stimulated, by manual stimulation or intercourse, before he has a full ejaculation, usually but not ALWAYS, a small amount of semen will be released by the male; he may not even notice it. This is referred to as "pre-cum". Pre-cum carries semen and is capable of getting a female pregnant. There is an old saying about men who use "withdrawal" as a means of birth control. When they are having intercourse, and withdraw the penis before they ejaculate, they assume that because they did not ejaculate inside the female, they are "safe". HOWEVER, because pre-cum can leak out into the vagina, WITHDRAWAL is not a safe form of birth control. The old saying goes like this: What do you call a man who uses "withdrawal" as a means of birth control? Answer: DADDY. Please use all forms of contraception that are available.
unless you are planning on being pregnant
Hope this information help you