Tubes tied??

Me

I will be having my 4th baby in April. It’s my bfs first. He only wants to have one of his own(it’s a boy). We plan on getting married and he already treats my older three like they are his kids. Since there will be 4 kids he wants to know what I think about getting my tubes tied. I’m nervous about it. Can anyone give me some insight on the topic? He said if I don’t want to get my tubes tied he’ll get fixed. Since I’ll already be on the operating table it would be easier if I just did it.