Looking for reassurance!

Kristin
I'm 17w4d and in so much pain already!! I've had some pretty strong cramps along with the round ligament pains and all the other joys of carrying two! I've had pretty much daily bowel movements, just regular gas and am drinking 3/4 to a full gallon of water a day! I just had my cervix checked and they said it was "beautiful" and the babies are both growing steadily and are  healthy. I wasn't put on bed rest because my cervix and long and strong but was told to basically stay off my feet for a while. For the moment I'm not worried about pre term labor but I am so nervous about what the next 20weeks or so will bring! These cramps are awful and I'm afraid they are going to last forever! Was anyone else in this much pain so early on? Did it subside even for a little or am I doomed lol