Labour Symptoms???

Symptoms:
Increased BM over the past few days, some loose.
Increased feeling of "wetness"/trickling today. I was going to phone the midwives but I did the one hour pad test and it was dry. 
Increased nausea.
I've been using my contraction counter for the past hour. I've recovered 13. I'm not sure if it's contractions I've never had a baby before but my stomach keeps getting tight both in feeling and to touch with a twinge of back pain. I can talk through it and it's more of a increased discomfort than pain at the moment. 
I've drank loads to try rule out braxton hicks.
Due date is early may this would be 4/5 weeks early.
I've not had a bloody show at this point.