Thanks for the query.
As your symptoms suggesting the possibility of pregnancy
if you had unprotected intercourse
around the time of ovulation, better to go for pregnancy test once.
But it has to be remembered that just by symptoms we cannot confirm or exclude the pregnancy.
If the test comes negative you once consult gynecologist, get examined and go for ultrasound
to find out the possible cause for your problem like pelvic inflammatory disease
and take treatment accordingly.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429