I need help. sex help.

Me and my boyfriend have been together 5 almost 6 years and have a 6 month old son. we live with his mom, in a small bedroom in a singlewide trailer... So, our son sleeps in our bed. we rarely have sex anymore and when we do its on the tiny patch of floor we have. wtf should I do? I'm just tired of not being able to have "good" sex anymore...edit: can't move out right now. don't have the money with all our bills and have too much stuff to rent somewhere anyway....we are in the middle of trying to set up a property.