Bitcoin's price began a new slide after another failure near USD 43,500. It's fallen 7% in a single day. BTC fell quickly below support levels of USD 41,200 and USD 40,500. It even tested USD 38,500 after breaking the USD 40,000 support. It is presently regaining ground and coming up against resistance near USD 39,000. Near USD 40,000, the next significant obstacle, the price could begin a recovery wave.