I Don't Know What To Do? I Thought Marriage Was Another Meaning For Forever??!!

Hi, Im an 18 year old mother , have a beautiful little 11 month old son. Im married but my husband is gone now. Idk what to do. We were living at my gma's & she has all my brothers & sister so it's really noisey & she yells alot too & she always accuses my husband of stuff or says mean things about him when he's gone & so anyhow this past weekend he whent to pick up my brother but instead he stayed there with my bro & my bro told me my husband wants a break from everything. An I asked what he meant & he said he wants a break because he is trying to work hard to get us out of my gma's but he can't sleep when he's at my gma's so he's stayin up there so he said he needs a break frm everything :(

Well Im scared. I love him so much & My dad left when I was a baby & I want my son to have a dad like i didnt. My brother said my husband said he was coming on our son's bday which in about 2 or 3 weeks. Do u think he'll come back & be with us? :( Do u think tht's enough time to be away or think about things? :(