"Oh no I've committed the unforgivable sin Lord please forgive me" if you genieunly say this you have not committed it. Why because you care. If you committed it you wouldn't be seeking understanding,conviction and repentance. You wouldn't even see it. Why because that sin is an invisible line. Once you cross it you dont even notice it. You can't accidentally commit the unforgivable sin. It is a willfull and persistent rejection of God, not one you accidentally do and then beg on youre knees for forgiveness. Because if you committed it you wouldn't be begging on youre knees you would be sitting hatefully to God like Pharaoh did. Or like the Pharisees you would be trying to judge God. And if they repented yes they would be forgiven but the point is this is an unforgivable sin. Let me put it this way if Pharaoh repented he would be forgiven. But so he did not as he outright rejected all to do with God up until judgment day. He was not accidentally sinning and then crying about whether he had committed it or not, he did not care; there in lies the difference. So about whether you should I think about whether I've committed this sin anymore both yes and no. Yes in the way that you shouldn't do what many people do and say I will leave the Christian Faith and Join it back later, that is a line you need to not cross. But also no in the way if you have Faith in Jesus Christ if you're comming with guilt,anguish and seeking forgiveness you have not committed it. And also do not use this as an excuse to purposefully sin. I hate sin, and though Gods grace is available for when I mess up I still hate when my body does it. But please my Brothers and sisters do not ever desire sin. The minute you let sin welcome youre playing a dangerous game, and play any game but do not play with sin. The response after sin should be wanting to step away from it not to bathe in it. And remember the verse Romans 8:1 NIV Therefore, there is now no condemnation for those who are in Christ Jesus