i am almost 35 weeks pregnant and my son is almost 4

over the last few weeks and more so the last week he has been sooooo naughty and winy and clingy and i am finding my self loosing my temper with him and i can not handle it ,he wont listen, i feel like a bad mother because i don't feel like i can handle it

i know that they can sence something is coming and they feel funny as well and can not understand it, and i know im prob having trouble because of my hormones ,

has anyone else had this prob or an i just a bad mum