Weire Tiny Ball shapes near left upper molar palate side

[nikassam]

I had some ulceration in october 2021 near root area towards palate side of left upper molar. Ulcers healed in few days , pain lasted only for 3 days with weird sensation .

Its been couple of months but now i can feel some very tiny ball like thing at that area now.

Its neither painfull , nor any redness

Whats these all

I already had dental treatment with OPG , CBCT MAXILLA nothing says abnormal except 17 bone loss horizontal