Any ideas

Kayla • I am 19 and pregant with me and myy husbands 2nd baby. first born feb 1 2016. 2nd babys due date is may 7th. hopibg for a boy but will probably get girl. either way beyond excited :)) ♡♥
So I went to rhe hospital last nite. They keep me on a monitor and gave me and iv over night. The doctor sent me home. Said I had preterm labor being that im only 37weeks. Im 2 cm dialated and 80% efflicted . He said to give it another week. Well I keep getting contractions in my back and it hurts. Either way. Any ideas what to do for a week. They feel like period cramps they come and go. But they hurt really bad.