If you haven't asked do so now. Anyone who is a born again believer in Jesus Chriat can not sin against the Holy Ghost because He dwells in us and can not be a witness against Himself. That’s important.
If we look at the example of Ananias and Sapphira in Acts 5, God does punish with death when he deems it appropriate. Therefore, it follows in my conclusion that one cannot accidentally commit the unforgivable sin. 2 Peter 2:20-22: "If they have escaped the corruption of the world by knowing our Lord and Savior Jesus Christ and are again entangled in it and overcome, they are worse off at the end than they were at the beginning. Here is a conversation I have on a regular basis: Reader: “Paul, I’m worried that I have committed the unforgivable sin.” Me: “You haven’t.” Reader: “But I had these terrible thoughts about the Lord…” Me: “You didn’t commit an unforgivable sin.” Reader: “I shook my fist at … In this series of emails on the Unforgivable Sin, I show why you have not committed this sin, and you can know that you have not committed it. You don’t get a second chance after death. Just because a person goes to church does not mean he or she is saved. It indicates a deliberate and irreversible hardness of heart. One that has committed an unforgivable sin cannot have a heart like yours. The simple answer to your question is "No: no one can commit the unforgivable sin without any awareness of it. That’s what He’s saying. He showed that the unforgivable sin and believing in Jesus are mutually exclusive. If you struggle with fear about committing the unforgivable sin, this free series of emails is for you. The unpardonable sin is the deliberate refusal to acknowledge God’s power in Christ. —Andrew James Isaac, St. Thomas, U.S. Virgin Islands. He loves you more than you can know and even though you will still "feel" unforgiven, you really are forgiven. Is this something that can happen accidentally? But, anyway, the issue is there is a sin that if you commit, you can’t be forgiven. God really does love you and you are forgiven if you asked.
If you are worried about having committed the unforgivable sin, that should be a comforting sign that you have not committed it—because those who commit it don’t worry about it. The Bible is completely true it has no contradictions. In other words, one who has truly blasphemed the Holy Spirit will not ask for their sins to be forgiven. There’s no hope. Some fear that though they cannot point to a specific time when they know for sure that they committed the unpardonable sin, they nonetheless fear that they may have accidentally done so without intending to at the time. In other words, there is a sin you can commit in this life that you now cannot be saved.
That’s because Jesus said: Anyone who is not a born again believer in Jesus Christ can commit the unpardonable sin against the Holy Ghjost.
But only those who have turned their backs on God and rejected all faith have any need to worry.