Gaining weight in face..

I'm 37 weeks pregnant and I've realized for the past two weeks I've been getting a double chin and it's huge now... Keeps getting bigger :/ I'm honestly so insecure about it and it's there no matter what all the time not just when I'm looking down. I just feel really fat in the face. I'm hoping it's just the pregnancy doing it to me but I don't know how to conceal it or anything it's making me feel so unattractive. :/ same for my upper arms. All of the sudden they've gotten to be like flabby old lady arms... anyone else going through the same problem? :/ I've been gaining the perfect amount of weight in my pregnancy so it's like what the hell :(