I practically can no longer say the words “what” or “where”?

I practically can no longer say the words “what” or “where”? i’ve always had a stutter and i’ve gotten used to it as it’s definitely gotten better over time but lately in the last month every time i’m in a conversation i can’t the words what or where. The problem is when forming the “wh” part of what it just doesn’t seem to come out and my mouths open making noises but i’m just not able to say it. See the annoying part about this is every time i’m explaining the words i can’t say i’ll say them perfectly so anyone i ask about this thinks i’m being unserious and just trying to be funny but i honestly can’t say it without fully focusing and speaking with absolute certainty. Any help?