Need help making it very difficult decision

Please bear with me if this is long but I really need honest opinions I just had my third baby five months ago and my kids are very close in age part of me is wanting to have one more baby but in all reality I am so sick of the baby stage I am 36 years old going to be 37 in October and I keep going back-and-forth so much that my doctor is even tired of it I want to get my tubes removed but I am scared I will be full of regret because I want one more baby that’s just the woman and me talking in reality I cannot handle another baby and I’m scared to get the copper IUD because I will think once my daughter is big enough that I am ready to have one more so I will remove the IUD because I know myself and then I will end up with one more child that I I know deep down inside I mentally cannot handle so if you were in my shoes what would you do would you get a tubal removal and regret not having one I get the IUD and regret having another one I know that sounds pretty shitty from a mother‘s perspective but the only way to get real responses is to keep my answer true I’m not even going to post is anonymously that’s how much I need help deciding the cons definitely outweigh the pros