 [ Symptoms ] all signs of pregnancy … but not pregnant [ Disease ] the condom can cause an irritation but so can the act of vaginal sex especially for the first time the redness or swollen area at the entrance to your vagina could be from some tiny tears along your hymen assuming you still had one at the time you had sex for the first time burning on urination could be cystitis irritation and inflammation at the opening where you pee used to be called honeymoon cystitis back in the days when the honeymoon was the first time a woman had sex or even a urinary tract infection sexual activity can stir up a lot of germs in this area    and germs can lead to a urinary or bladder infection germs can come from fingers mouths oral sex as well as a penis now that you have chosen to be sexually involved you have a responsibility to make adult like decisions when it comes to your medical care if you do have a urinary tract infection burning on urination frequency urgency or even blood when you wipe this needs to be medically evaluated a urine test will not reveal your recent sexual debut so it is really up to you whether to disclose this information a pelvic examination is not usually needed to make this diagnosis only a simple urine test my suggestion would be for you to get checked just in case women and girls of all ages can get urinary infections whether they are having sex or not obviously infections are more common if you do have sex i am pleased that you and your partner used a condom make sure you use them 100 of the time or urinary burning will be the least of your problems