Thanks for query on HCM.
Your all symptoms suggest pregnancy
but without investigation it is not possible to judge at this stage.
So you have to go for urine pregnancy test after 7th day of missing period.
You can also confirm it by blood hcg
If pregnancy test is negative than it is most likely urinary tract infection
and PID due to unprotected sex.
Start treatment for it under guidance of your doctor.
Get examined by gynecologist for better management.