أحسن الله إليكم I have been having Kufr thoughts, such as, "Did I just insult Islam?" or "Was what I did Kufr Akbar?" Aside from these thoughts and some waswas that I try to ignore, I feel completely sane and healthy. Should I ignore these thoughts, or should I say the Shahada again just in case?

Ustadh AbdulAziz al-Haqqan
Ignore them and do not repeat the shahada because of them, seek refuge in Allah from Shaytan, also if the problem stays or gets worse you can seek out Muslim trustworthy doctors.