Bobbin thread problem
Quite frequently I find that when I'm sewing, the bobbin sends up (or the needle grabs? not sure) two more bobbin threads, so I end up with one 'top' thread, and three bobbin threads. I end up having to pull the extra thread out of the material after I take it off the machine. Funnily, the 'extra thread' I pull out is just an 'extra' bobbin thread that was looped, so that it looks like 3 threads.
Hopefully I haven't made my description too confusing! Can anyone tell me why this is happening? Is it something I'm doing incorrectly? I'm not overly experienced with sewing. If you need a pic, I can provide one next time it happens.