I'm 4b and big chopped a few months ago. Don't let others discourage you from loving your god-given, natural texture. Determine right now that you are going to love it and you will. When you first big chop, you might not fully understand your texture and how to properly take care of it. Even some YouTube videos can be misleading on how to properly take care of 4-type hair. Just pay attention to those that care about retaining length with styles you could appreciate.
When I first big chopped a few months back, I was concerned about what hair-type I was, but as you begin to fully understand how to care for your hair, the last thing you will care about is what curl pattern you have. Yeah, 3c / 4a hair is cute, but so is my 4B hair, and I dare someone to tell me otherwise! I reluctantly rocked a matted, dry afro for the first week after BCing and loved it even then. It wasn't until I fully understood how to properly moisturize my hair, twist it nightly to avoid matting, and what products I shouldn't use -- did I really see progress in not only the health of my hair, but the manageability as well.
I am only three months natural, 6 months post relaxer and I've tried it all. I've mastered shingling, mini-twists, twist-outs, and other creative styles that have diva-fied my TWA. I'm not a big fan of afros, but when I wear them, best believe that I rock them with pride.
I'm not knocking those who choose to loosen their texture. That's their right! When I was relaxed, I didn't want anyone judging me, so I refuse to judge anyone who chooses to manipulate their natural hair texture or color. All I'm saying is: go into it open-minded, because many don't. Some hope within a few months, their curls will loosen to 3c/4a and when their hair doesn't don't they get discouraged, disappointed, impatient, and feel that "natural hair isn't for everyone." Well, it is. All you have to do is learn how to care for it and style it.
Truth be told, I didn't think I even had CURLS! So to have 4b hair is a wonderful thing to me. They are super tiny curls, but hey! I work with them. That's what being natural is all about: learning to work with what you got and maximizing it's potential as opposed to forcing your hair to work with you (which is usually what happens when people chemically alter their hair).
Best wishes, hun! Feel free to visit my blog to see my TWA hair care regimen and how I keep my 4b hair super soft and stylish!