I have sent BTC yesterday but one day passed it is not confirmed, I have raised mining fee, this sucks.
Maybe it happened because of some modifications, and problems are only normal to be encountered since Bitcoin is an open source, I think. And at this moment, it is now working well. It won't die easily, now that it's demand increased and its community is now larger. Also its price pumped a lot since the modifications or fork that happened. Let's just hope that these kinds of problems will be fixed immediately as possible.
I even saw someone complaining that he made a transaction that is still yet to be confirmed since 17 or 18 days now. I cant really tell whats doing that. But for sure, that doesnt mean that Bitcoin is going down. I guess that will be due to people making transaction with low fees or none, and miners not giving their time to confirm such lower craps.