Will docs check your hormone levels?

The last two months my periods been extremely wacky, and for almost 4 weeks now my boobs have been killing me. I’ve taken several hpts and not pregnant. I’m curious if docs would do blood work or something to check the levels of my estrogen???? Or something. I do suffer from endometriosis which could be the reason of strange cycles but not sure why my boobs have been hurting.😣