Pumping ?

Farhiyo • Married❤️ [ Mother of a 2💖💙].
I think I'm starting to just get my milk supply and my boobs hurt so bad I'm a ftm so I was wondering can I use my breast pump ? Or do I have to be leaking in order to pump ? My breast hurt and feels so heavy . And I'm trying to breastfeed my daughter but she won't latch whatsoever it's so difficult 😪😭
So my question is , is it okay for me to use my breast pump or do I have to be leaking in order for it to work ?