Hi, I am 4 months pregnant now and I know that it is normal for pregnant to feel more in sex becoz of hormonal changes... but is it also normal to hate sex or I don't feel like I want it... is this also normal or my hormones are getting low?

It can be perfectly normal. Perhaps there is an unconscious concern about hurting baby; you won't... might be that you find it uncomfortable; lubrication is sometimes an issue... most likely it is just normal fluctuations in hormones.
As with your appetite for food, your appetite for sex will often go back and forth during pregnancy.
Certainly discuss it with your partner... find other ways to connect and remain intimate. Talk to your doctor if it continues and causes you and/or your partner concern.