I have purchased a E.P.T (Early Pregnancy Test) because I haven't had a menstrual cycle in a month (October). I was suppose to have my menstrual cycle in the middle of October <---Only thing I have experienced is ovulation (sharp pains on the right side and slimy discharge). Can I take the pregnancy test anytime of the day or morning because it doesn't say on the instructions?

It's best to take it using first morning urine as the pregnancy hormone HCG is more concentrated at that time.

Can drinking a lot of fluids such as carbonated drinks and water affect the Early Pregnancy Test?

No, that won't change the outcome, unless of course you take the test anytime other than first thing in the morning.