help......

2 days late.... woke up yesterday morning with a UTI. been drinking cranberry juice and water ever since. but it doesn't burn when i pee it just feels like i have to pee every 10 mins and i usually have very bad cramps... but not this months. no cramps what so ever!! i'm very fatigued and keep taking naps and just don't feel like i'm in my right element. could this possibly be pregnant? the only symptom i really have is mild tender breast... that's it. has this happend to anyone... if so when should i test?