Getting my tubes tied.

Destiny
I'm at seriously considering getting my tubes tied after my baby is born. I'll only be 21 but I have a bit and I'm having a girl. This pregnancy has just be beyond horrible!! I know the "you'll regret it later" I'm getting it a lot from my family. I wanted more kids but I just don't think I can handle being pregnant again. I'm 37weeks and I'm in non stop pain (not labour, I wish) I can't sleep on my left hip or it goes numb or my right side because it causes horrible heartburn and my right should and hip go numb. Sleeping on your back isn't best and to big to sleep in my tummy. I get dizzy daily and feel like I'm about to black out and have collapsed due to right hip pain. I was told baby maybe on one of my nerves. ALL of her movements hurt lately. He kicked so hard the other night I heard my rib crack or something. I want more kids but don't think my body could handle all this again. I can barley stand for long because I get light headed and feel like I'm going to pass out. I need advice on how to make it the next 3week! And words of wisdom to know it gets better and not worse with the more kids I have. Since my boyfriend wants more kids. Please any advice will help or even a nice word can make me feel better.