AITA for not telling my boyfriend I am getting Tubal ligation?

I am 40 Y. O . I have 2 kids, a boy 13 who is autistic and a girl 10. My boyfriend is 34. We have been dating for 6 years and living together for 4 years. My boyfriend moved in when my son was 11 . My boyfriend has been a great partner . <br><br>My boyfriend has been pressing me to get marry for 2 years. He also mentioned he wants more children. I am not sure why he wants more children and I am not comfortable to get more. With my 2 we have hard time. <br><br>In fact, I am not comfortable to get married at all. I am comfortable with my life like it is. <br><br>I am not comfortable to get the implant or the pill because it doesn't sit well with me. I always have symptoms. <br><br>I am on a waitlist for the Tubal ligation. It should be next month I am getting it. It's been a long process . <br><br>I haven't told my boyfriend I am getting it. I did tell my sister and my sister in law. <br><br>I told him I am not sure about getting more kids but he kept pushing me. I told him if he wants a wife who is willing for more kids. Then he wants another woman not me . <br><br>I feel I don't own my body. I did told him I would not get marry him . <br><br>My boyfriend is a good man but I don't want more kids. I am slightly in a difficult place.