Just a simple worry

Dana
Hello, I'm just asking a question for some of you whom have had experience. I have recently have had a vaginal infection for 2-3 weeks same with a UTI. I am on antibiotics called Bactrim and my period is late. Never has been late before. I have had sex recently but we used withdrawal way before he came. I was just wondering if it's normal for your period to be late if you've had those infections. Thank you.