Resolved UTI, but frequent urination.

Dear Doctor,

I am 26 year female, married before a year. I will list out the symptoms as points below.
1. On 18th febraury night i was urinating frequently and the last drop was burning a lot. Went to hospital emergency and they tested urine sample and told i have UTI. they prescribed me Antibiotics.
2. I took the medication for a week and i did nto recovered. so booked an apointment with a urologist and consulted him. He did the same test and prescribed ther antibiotics. This time also no improvement. then the doctor changed the antibiotics. this time i got some improvemnt. In the middle of this i got fever and back pain.

3.after medications are over. I went to the doctor, he said urine ssample is clear and no need of any medicines. But i said, i am having the problem of frequent urination. He said it will take two weeks to become normal.

But i was not recovered still.

My friend is a homeopathy doctor and she gave me 'APIS' when i got the burning while urination the first day. but it does not work out. thats why went to the emergency.

Now my problem is, I will get up normally in the morning. But once start drinking water and as the day goes, when i urinate and come out. I feel like i my bladder is not empty and i want to urinate again. Within 10 minutes i will urinate again.Like this it will happen for 4 or 5 times.

Then i will be normal. Once i drink water again. I will have the same problem.
I feel like somthing is pulling the urinating place down. sometimes after urinating, if i sit there for a minute i will get some more out. Like this if i sit and try i will keep on urinating.
I dont knwo what to do. Will this be any problem with my kidny functioning or anything? Should i ask doctor to take any scan or any other test?

Please help me out.

thanks