Did I commit blasphemy against the Holy Spirit?

I left God. I left Jesus. I denied Him. I know it was wrong, but I did it anyway. I converted to Islam for a day, but left because I was scared. Before I converted I studied the religion and became confused over which God was real. I came running back to Jesus repenting,crying, truly sorry for what I did. I never called God evil or anything like that nor have I ever worshiped Satan. Did I commit the unforgivable sin? Didn't Jesus say that if you confess with your mouth and believe that I died that you would have everlasting life and that you would not perish? Please, tell me the truth. If I didn't commit the sin, explain to me why. Thank you!