45-46 thousand dollars is a big deal, but it is also a risky level, if we can continue to go up, that means 50k+ will be piece of cake, there isn't much resistance between 47k to 50k+ for example, so if it reaches over 47k then it means it will probably reach over 50k as well. These type of small details matter a lot, and with every single move we are getting ready for a bigger move.
There is some resistance to $47k as it seems a hard barrier to break right now. And the resistance to $50k will be much greater as we all know that this whole number price are what speculators are looking for.
However same goes for under 42k as well, if we go under that level, the support is quite weak, incredibly weak even, all the way to 30k there is absolutely nothing that can keep the price high, and it will keep going down. Only way to prevent that would be to stay around these prices for longer and longer so that we can establish the strong price at these points. In the end we need time, that's all we need for both directions, as long as we have time then we can know more about the future.
I'm not gonna say that it is weak, the support level is there, it's that when we reach that price, many have panic, specially newbies that's why the price will simply go down despite the support. But after a couple of days, the support will be established again. And that's where the very definition of fluctuation sets in for crypto market.