Yes they are right, phone your midwife or maternity suite when you are experiencing the signs enumerated above... It doesn't matter whether you are having practice contractions or not, best to notify them as they will check your BP, Baby's heartbeat etc... (I had 2 series of false alarms: On my 7th month (stayed in the maternity unit ward overnight & 2 weeks after, went in again)...

Best wishes to you! Relax ka lang po. Drink plenty of fluids, nakakatulong!