I had period like pains but they were different to the braxton hicks that I had. My braxton were definate tightenings, sometimes not as strong as others, just uncomfortable. If you're concerned I would call your hospital or carer and just ask them the question. As when I did this at 36wks it ended up that I was actually having contractions. Have you got lower back pain? I now know that this is also a sign of early labour. I'm sure that you're fine and there is a lot to be said for intuition, so listen to it. Fingers crossed bubs stays put for at least another 4 wks.