clooged sink

Thanks everyone for your advice and ideas. I ended up bringing it to a Camping World. It was the flex pipe. The slide grabbed it and put pressure on it. I poured a pot of boiling water down the drain the night it clogged, which is not recommended. With the added pressure on the flex pipe the hot water crimped it so water would not pass. Camping World was able to bring it back to form with a heat gun, then wrapped it in a foam like covering to help protect moving forward.