Thanks for your query.
can take place only on 4-5 days (when the ovulation occurs) in a month, provided you have unprotected sex on THOSE days.
Wait for 5-6 weeks from today : do pregnancy test ONLY if you don't get a period for next 5-6 weeks.
Your frequent urination
is apparently due to Urinary tract infection
. Get Urine examination done + its culture and sensitivity test.
Consult your doctor who- after seeing your urine report, will prescribe most appropriate antibiotic.
Hope I have answered your query.
Dr. Rakesh Karanwal