36 weeks pregnant and losing my shit

I'm 36weeks and I'm so uncomfortable I can't sit I can't sleep I can't breathe everyday that goes by I feel like maybe I will go into labor because of how uncomfortable I feel . I have so much pressure down there I can't walk without pain my back has been killing me for the last two weeks . I'm literally so sleep deprived that I can feel myself getting depressed from lack of sleep. I have gone to the LD a total of four time during my pregnancy with strong contractions. They monitor them and always send me home because my cervix has not changed . Last night was a specially rough night I slept a total of 1 hour and 40 minutes between the contractions keeping me up , the bathroom brakes and getting kicked in the ribs. I sat in my exercise ball and rocked my hips for like an hour it relived some of the pain of the contractions . This morning I was in so much pain I though I was going into labor , I had a routine check up with my ob and he sent me to the LD to monitor me because I was having painful contractions every 3 minutes. I get there wait an hour to be seen meanwhile I'm crying in the waiting room from each contraction . Only to be told that my cervix has not changed at all that I'm still super think and not dilated at all, but that I am contracting frequently but that their is nothing they can do but send me home . At which point I started crying because it's the fourth time this has happened to me I have been having contractions since 31 weeks they are going getting stronger , so I assume all this pain and nuisance was due to things moving along getting me ready for the big day. However to hear than my cervix is doing absolutely zero really made so emotional I can't even explain how I feel right now. Can someone please give me some hope that things will get better . I honestly feel like I will be pregnant forever and that I won't know when to go into labor because I've had so many contractions up to now with no results. Please ladies any kind words will be appreciated I have never felt so vulnerable in my life.