Is it ok that i shave my pubic hair & arm pit hair ?

Yes it is: yes it is actually it is more hygienic to do that to keep the area clean and the skin to ventilate. some culture they supposed to do that on a monthly basis

Personal choice: The shaving habits of humans have varied for thousands of years and involve any skin surface. From the practices in ancient Egypt to today, it is both a personal choice & has pros & cons. To do so involves time investment and some expense. There are also issues some have with skin irritation or minor infections. Do what you wish.