Hello and welcome to HCM.
Thank you for your query.
First of all, commenting on the antibiotic. You need to know that each individual has a particular response to any given antibiotic. Some individuals will be highly susceptible (that antibiotic will be effective in them); whereas some individuals will be resistant(will not work at all) to them. We can asses this with the help of another urine investigation called a urine culture and sensitivity examination. This investigation will first confirm the presence of an infection, it will then give information of the infection-causing organism and finally a list of medications, that can or cannot be used in your specific case. This is a very good investigation, and thus, in your case I would advice it.
Burning sensation and frequent urination
are both symptoms of a urinary tract infection
(UTI) and should be confirmed with the help of laboratory investigations.
A possible UTI is suspected first with the help of clinical presentation (your symptoms), this is then followed by a urine analysis; which can guide the doctor through diagnosis, but at times provides inconclusive reports. Whereas, a urine culture and sensitivity is much more accurate and precise, but time consuming.
It is fine if you miss one dose, continue with the usual next dose, and just add one extra dose to the complete treatment regimen.
I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications. I would gladly help you.