I don't know what to do.

Well my fiance just told me he thinks we need a break he rushed from a 8 year relationship straight into going on 6 years with me. I asked him tonight whats been going on with him why won't he talk to me, he said he doesnt want to hurt me. He says he think he needs a break time to himself. He has no where to go so how will this work? I ask him if he thinks we can work through it he says he doesn't know. I bring my 7 year son home from grandma's tomorrow (from previous relationship, his father passed away). I don't know what to do or what to say. He proposed to me last year we just got our official rings in the mail waa talking about doing a courthouse wedding. I've been taking buttloads of pills to try and concieve ( i suffer from PCOS). Can anyone give me some guidence?