Is it normal for me to still feel this way after smoking weed?

Almost a day later and I'm still having heart related paranoia. So bad in fact, that i'm afraid of falling asleep because I fear that I might not wake up or suffer a heart attack. I don't know how to get over this feeling. This is my second time smoking but the funny thing is, I didn't feel this way the first time. I was scared out of my mind, but that feeling eventually subsided once I realized that was a natural part of being high. So is this heart paranoia going to go away? I can't count how many times that I've woken up out of my deep sleep because of this paranoia. This is probably all in my head, but I can't convince mind that. Every little heart beat makes me extremely nervous. My mom was suspicious of my weird behavior but of course, I didn't tell her that I was smoking the previous day.