Hun i could not read and run- i have not been there so i can not offer any real advise
But i have heard that this type of thing does happen at this age or around this age, so maybe its a normal thing they go through? i know i know it doesnt help you at all by me saying this.

I think you sound like you are doing such a great job, it would be so hard, lack of sleep being pregnant and having your little one scream all the time.It would be very hard on you,i am glad you have a great DH to help out,sometimes it might help if your DH settles her or tries to? so you can take a moment ?

Hnag in there keep up the great work, and remember if things get to tough and u feel like u cant cope- step back and relax for a moment