Sexually frustrated

Ugh! I can never get my boyfriend alone. His sister and her 2 babies and husband  are here visiting, we're always working, and by the time we get around to hells fools gates have opened! I have no problem with period sex, but I would like it to be clean. And plus school is coming up shortly so no time at all hardly. I don't want him to feel like he's being neglected.Tips anyone?!