Welcome to HCM,
Your symptoms are suggestive of UTI that is Urinary tract Infection
, please visit a doctor and get Urine Routine analysis and culture and sensitivity test.
You are feeling fever
also so you can take plenty of fluid and burning should reduce and if pan and fever is there you can take a Paracetamol
to help Once test are done you can be prescribed Urinary specific antibiotic course, if there is need it can be modified after sensitivity test.
In the mean time take lot of water and cranberry juice.
You had a protected sex so chances of STD
are less but it can not be said with certainty so if you have any symptoms or discharge do test for herpes
and other STds, hope it is nothing.
Please practice safe sex in future.'