Thanks for the concern, had the ultrasound today and baby is fine, cervix is well and truly closed so not pre-term labour which is good. The braxton hicks have almost stopped today and no more spotting either. Only think the ultrasound technician noticed was a 'venous lake' in an unusual position behind the placenta but she doesn't think it would cause any issues. The other results say I don't have an infection either. Guess it was just one of those random pregnancy things!