I have been stuttering A LOT lately

I have been stuttering A LOT lately (19M) The past few months have been really odd for me. I have so much trouble forming sentences sometimes. This is not every time I try to speak, but it happens a lot. I'll try to form a sentence but I just bunch the words together. I'll begin to speak and just say "ksdhfgshf" and then I have to stop myself and restart very slowly. When I really slow down I speak just fine. And the oddest thing is that this is new for me. I was never like this. I never had a speech impediment or mispronounced words as a kid. Even my family and friends have taken notice that this has been happening lately.