weird period

on my second period ever, so not so long ago, I woke up, went to the bathroom and apparently I had bled a jello blob of blood that was hanging by a thread off my night pad. You would imagine my fear, this only being my second period and having school in an hour. I quickly disposed of it and searched about it when I got home. I didn't find anything about anyone with the same problem, should I see a doctor or something? Nowadays, my period is really heavy, and yesterday I bled a worm like thing that freaked me out. It wasn't a real worm I assure you. Is this normal?