The 3 common possibilities I can think of in your case are urinary tract infection
,delayed periods, pregnancy
. I would suggest that you get a urine routine examination done as soon as possible to rule out the possibility of a urinary tract infection.
Repeat the pregnancy test after 4-5 days. If still negative and no periods , visit the gynaecogist for a check up.
In the meantime, drink plenty of fluids, at least 8-10 glasses of water a day. Follow good perineal hygiene. Ensure regular periodic emptying of the bladder.
Hope this helps.
Dr. Divya Kuttikrishnan