tieing my tubes (update)

I'm 24 yr old pregnant with my 3rd and last child. I signed all documents before discussing it with my husband because I knew he wouldn't agree being that he wants 7 kids, he comes from a big family hes 1 out 13. problem is he spends alot of time at work and so the time we do have is split between family time and couples time. It's hard to balance everything sometimes. so that was just a little back story. I'm 36 weeks I woke up this morning excited we got everything ready for the baby to come so I decided to turn on the grill, i called my mom over and he's brother showed up with his son and then his friend showed up with his 3 kids. I agreed to babysit his nephew being that his father had to work but I wasn't aware he would be stepping out with his friend. so I somehow ended up with 6 kids 😑😐 at first it was fine then they started arguing and fighting I became so annoyed so i called him to come pick up his friends kids and it reminded me all over again why I signed those papers without discussing it with him. I'm not looking for advice but I did want to get that off my chest. (UPDATE) I'm sorry ladies I thought I was clear when i said I signed the papers BEFORE discussing it with him not that I didnt discuss it with him. (so i can cancel if i ever wanted to) he was well aware when we got together that I didnt want more than 2 kids and i was also well aware that he wanted 7 we ended up with 3. I love my kids to death and choose to have them all early so not only could i give them all my energy but so that when they got older I was still young enough to enjoy my life with my husband. he's an amazing dad but he doesn't put half of the work I put into being a mom and that doesn't bother me but I'm realistic about my situation. dad's could get up and go without a problem, mommas can't. on top of it all he had asked me to help him adpot his nephew's. so we've been discussing that they would be under my supervision while he's at work or out, ect its like having my own kid, they simply not mine biologically. lastly, he makes good money but I make a couple hundreds more, all bills are spit and we live comfortably another child would make a huge difference financially.