My gums and teeth look so gross! Help?!?

I got my braces off mid January this year and my teeth look horrible. My gums are inflated and red all the time and I've done everything my ortho told me to do (maging gums, gargling salt water, etc.). I brush and floss twice a day, and gargle once before bed, but even this has not made any significant improvement. I'm really sick of this. I had a big gap between my front teeth before I got my braces on and when my two front teeth were pulled together I was left with this big, loose piece of skin in between them and my gums above that look squished together. I want this to be gone! I thought getting braces would make me confident about my smile (which I never have been)! My mom wont even pay for me to pay for me to get them cleaned and whitened even though everyone, including my ortho, is telling her to. My teeth are so yellow I gag just looking at them. Its been 5 months of this! Any professional help would be great, thank you.