Urine specimen symptoms and conditions

I have been taking Macrobid for approximately four days. I have had increased headaches that won't go away with normal medication dose. I also have had horrible gas...in addition to stomach pain. I have have had increased urination, having to pee constantly. I have been getting up about four times at night, which is worse than before I went to the doctor. I wasn't sure if this was the UTI or the medication? Saw someone else's posting that they had increased urination too. I'll keep taking b/c I don't want the UTI to continue but the med is not fun.