Its only me again...lol!

I am 39 weeks + 3 days and had my 1st sweep yesterday with midwife, after she said my cervix was closer than what she thought it would be and on its way to being how it should and said i was 1cm dilated and could jus about feel top of babys head but since last mon i been havin tightenings with pains but not as regular as they sometimes are so not to sure exactly how long i been 1cm dilated could labor be soon??? I had a show but still feel as though it hasnt all come away yet but midwife said hopefully the sweep i had should dislodge it if not the 2nd one might!!
I have to see midwife twice a week now as bp does tend to go up and down ect so seeing midwife again thurs for a/n check and sweep if i want one then see what happens then and if im anymore dilated... i didnt realise u can dilate and not actually be having regular painfull contractions so thats confused me quite alot as me and my partner are just thinking well will we actually know when i am in labor and the waiting is just getting to much right now as its been goin on for over a week now,and everytime i get a tightening with pain were both like is this it????? i know 1st babys dnt come till due date or after just with me getting all this im not to sure how to take it all
midwife said if thursdays sweep doesnt work then she wants to see me monday for check and sweep again and so on untill 41 weeks as doc said he would like to consider induction if i am not in labor by then, i take it that could be my history of raised pb ect but midwife she thinks if im still the same by then as i am now then should wait till 10 days over due...

All this is so confusing to me and my bf, we just want our baby girl now!!
Oh and something about me being station -3 whats that about?? Take it thats my cervix being charted so is this me gradually getting into labor and cervix preparing itself???

Hope you can help me... were so confused

Laura