Did I commit blasphemy of the holy spirit?

Okay so I'm extremely worried. I grew up catholic but I became athiest for a while, & I spoke against God, & told people that I thoguht religion was a crock of sh*t & would always make fun of it, & i thought it was a bad thing. But I see it isn't now, but I'm really scared that Icommitted an unforgivable sin, can someone tell me Im wrong? Because Ive heard that all it is is dieing without beleiving Christ.