Is it ok change gynae at 29 weeks ?

From the beginning i am going to KK for consultation but from very long time I am thinking to change gynae as I am not liking her, she doesn't provide details and whenever i ask her questions she will give very rude answers whenever I send mails for queries she wont reply immediately, she will reply after few reminders. Don't know I am just loosing trust on her, she doesn't even tell baby weight and size in every scan, i have to specifically ask her, she is always in hurry, i understand she is very busy and probably bored with same queries but i am first time mommy definitely i will have my own doubts, still confused should i change or not? Pls help