I need Ur help..its all about my meditation..?!

I need Ur help..its all about my meditation..?

I really would like to meditate twice a day .early in the morning and in the afternoon..but my problem is i have no Quiet place,room, nor space to meditate..My family members are so noisy, keep on slamming the door..and all they are all fond of it..I also share my room with my sister so cant do it there...I also cant tell my family about my meditation because they will feel strange about it and I really really dont like to know that I am doing such thing..what Am i going to do??

meditate in the shower/tub, even for a couple of minutes