Thanks for query,
You have ovulated & that day you have intercourse extremely increase the chances of your pregnancy
but the symptoms you have is more likely to be of anxiety
then being pregnant.
The sperm injected in vagina lives for 2-3 days & your ovum can live up to 3-4 days so you should go for intercourse before & after 3 -4 days of ovulation increases the chances of pregnancy.
Right now pregnancy test is the only answer.