It's your first bubby and they often take their time so I wouldn't worry too much about being far away - if you are not sure about going in yet then the contractions aren't strong enough. You will get put in a room and probably get bored! They may even try and augment / speed up your labour. I would wait at home more and remember, its not just time between but length of contractions. Early labour you would expect 30 second contractions.