College and pregnant

I had to withdraw from one of my classes. I was not doing good in that class. I had a hard time focusing there were quizzes after quizzes tests after tests and I was just getting overwhelmed. I’m also 27w+3d I’d cry during the week since part is online and then the tests and quizzes we’re every Thursday. I just felt like I wasn’t learning anything. I feel like a failure for dropping out of the class. I feel like I’m failing my baby by doing that.. it was taking so much of my mental health and working full time just didn’t help either… why do I feel like a failure for putting my mental health first