Unsure if I it’s UTI or what?

So this past Monday i went to the doctor because my face has been peeling really bad and they gave me some stuff for it an antibiotic so I don’t get an infection or anything and something to help prevent a uti so I took the steroid (they gave me that too) and it kinda made me feel a little sick so I stopped taking it after that day so the next day I was kinda not feeling well and I just shrugged it off and chucked it up to the meds and then I noticed I started urinating more frequently and i just started drinking more water in case I was getting a uti caused by meds which I’m wondering how one dose of the meds could cause a uti but whatever so now my period is late it was supposed to be here yesterday I woke up went to the bathroom there was very little brown spotting in the morning and nothing else for the rest of the day so today I haven’t had any spotting or anything and I’m wondering if my possible uti could cause my period to be late? I don’t think I’m pregnant because I usually have irregular periods but I’m wondering if one thing has to do with the other.. can anyone give me any info or personal experience?? It has me so anxious because I don’t want to get my hopes up and be disappointed I want to have a baby but the process has been so disappointing i want to rule out whatever I can before I jump to the wrong conclusion