So glad you got some sleep. It does sound like you are having a long latent stage, and as others have said this could go on for days or even weeks of stop/start contractions. Try to ignore the contractions as best as you can (easier said than done I know) and if all else fails try 2 paracetamol and a bath or shower to help you cope. Keep well nourished and hydrated as well.

as for when to head into hospital, a wonderful midwife once said to me "stay at home until you really think you need to go to hospital. Then stay at home a bit longer". Home really is the best place for your labour to flourish and hospital /pain relief/ internal examinations now are just likely to lead to things slowing down or being interfered with.