Chocalita,
I think it is a given that if you fall off the low carb wagon, and resume eating as before, that you will gain weight back...
I see you are very new...go and start a journal, that way when you have questions, people can come straight to you to answer them...and you should also feel free to visit other peoples journals.
That is how we all stay in touch and support one another.
Take care...and do start your own journal...you will love it.