The beautiful thing about our God is that we can repent at any time and start fresh, ideally by going to Confession and Communion. Jesus Christ forgave serious sinners, and He is ready to forgive you. Don’t worry. The one putting doubts and fear in your mind is you-know-who.
As for repenting for fear of going to Hell, that’s a good start and there is nothing alarming or hypocritical about it; but you should then strive, through reading the Bible and good books (Scott Hahn, Patrick Madrid) to draw closer to God and develop once again an intimate relationship. He’s calling you. He loves you.