Anyone else struggle with rude comments as a single pregnant mother?

Anyone else a single mom and pregnant again? I have three and am pregnant with my 4th. I take care of my own kids and have my own job but still get comments that I should know how to stop and get on birth control. I don’t get why people feel the need to make these comments, I would understand if I didn’t take care of my kids but I do, I even have my own house and car. How do you get through this?