Welcome to HCM
I can understand your concerns,it is more common to have UTI ( Urinary Tract Infection
) in this period,and status of you are being pregnant is not known this antibiotic should not be used.
You are having symptoms so please consult a Physician/Gynecologist,and get prescription there are other safe antibiotics may be prescribed to you till you get test results.
Get your urine tested for Routine and Micro scopic also a Culture and sensitivity to know which drug is suitable to cure infection.
If your expected date is near do pregnancy
test,or you get period then cure your infection first.
Best of Luck.