That definatley sounds a bit like a show, I wouldn't worry this can happen at any time, can sometimes just be a reminder to get things ready. If your a bit worried have a chat with your midwife and they can reassure you...x
thats a 'BLOODY SHOW' and happens towards the end, it can happen 2 days before labour, during labour or 2 weeks+ before so I wouldn't worry too much! its your body getting ready - have you been to any classes yet? they can reassure you (NHS or NCT) But you can ring your m/w obviously best of luck!