Try doing the full version of the AUM mantra, start with AW in your chest, move it up in the same out-breath with OOOO in your throat, then feel the MMMM coming out through your crown with your lips closed tight (don’t clench your teeth) - this may dislodge any blocks. Try one go with it and see if it helps, if it feels like it’s moving things in a good way, do 2 more, or as many as you feel are helpful.