I think they start coming on about this time. I don't think it's too early
I have been getting them also:( Just make sure they arent developing any pattern or having more then 5 an hour (I think thats what my doctor told me) Im not exactly positive on the number. But at your next appointment let your doctor know, he/she might have diffrent instructions for you:)
nurse at the hospital yesterday told me about 411
4 in an hour that last for minute , then call dr