Satan tried to convince me that too but I forget how long that lasted. He tried to convince me I am the antiChrist and many other lies. True growing believers and followers will experience it all.

Jesus blesses you!

Btw true blasphemy of the Holy Spirit is believing him to be evil and declaring it. The Pharisees too their attack from the outward man of Jesus to his inward Spirit and that's when they crossed the line. Calling him evil after having known his goodness, is blasphemy of the Holy Spirit.