Working all the time

Ive started working a late night shift and i dont get home until around 6:45 am....I barley see my SO and when i do its almost like i have to share him or run errands for his mom....When i come home his moms boyfriend will wake up at 8 am and blast the radio like who gives a damn i just got off hes always talking loud i really cant stand his ass....How can i tell my SO how i feel about this situation without seeming like a bitch