Ah, ok, Mae. I was wondering (again) because I thought you had said something about PTL before.
I can feel my contractions very early on, too, but they aren't painful. When I was getting the stress tests when I was pg with ds2 the nurses would look at the monitor, comment that I was having a lot of contractions and ask me if I was feeling them. When I said that I could feel them they were surprised that I wasn't in pain. With ds3 I started feeling contractions at around 12w. That's when my midwife told me to try the red wine and warm bath. That slowed them but I still felt contractions my entire pg. Unlike you, though, I find labor to be very painful. I'm the crazy lady you hear 3 blocks away cussing and screaming her head off.
I'm sure you've already tried this because it's so basic but the only thing I can think of is to drink lots of water. Keep yourself really hydrated. I've read that PTL is associated with dehydration.