In answer to the question, yes the contractions were regular when they started. The closest they got was generally 2 or 3 mins apart, most of the time they were only 5 mins apart.
I found the tens machine really helped me, I was told I could use it by the hospital the first time it happened. With my second experience of it I was told I should not use it, I ignored them! They told me I could "use it at my own risk" as in some people it can cause contractions apparently!!!
I did find that most of the time that when the contractions were triggered from walking that just resting and drinking plenty of water helped them to go away after about half an hour. I only went to the hospital a few times with each of them.
I vividly remember with my first pregnancy getting to 38 weeks and telling my husband that we were going for a walk to make the baby arrive. I walked around the park with him, I was stopping for the contraction every couple of minutes, I kept going for as long as I could manage before getting exhausted. It failed and the baby stayed put for another 5 days!
Timeywimeystuff - so sorry you are suffering through this, do try to keep as hydrated as you can. Rest, rest and rest some more. Have you tried the tens machine? I do remember how it was to feel the way you do, it is tough. The first time it happened I thought I was just being pathetic, and did not realise how unusual it was. But I allowed myself to go through two more pregnancies and would choose to do so again if it meant another baby, so wasn't too bad once it was all over!
FestiveDigestive - if you are in doubt you should head towards the hospital You can't take the risk. If they are painful and close together then go to get checked. I made a few trips to the hospital on false alarms, but the hospital were always very good, and never made me feel bad for going. It was just inconvinent with dealing with the trips to and from the hospital. I was pleased that I had had the steroids for the baby's lungs and happy once I got past 36 weeks that if the baby decided to come early that all should be ok.
As for the negative fibronectin test, I was travelling between Ireland and England after one episode in hospital. I was told that I would only be released from the hospital to travel home, if I could promise I would be home within 24 hours of the test. They said that they could only say that labour would not happen within 24 hours of the test, and that it was unlikely to happen within a week, but it could happen in that week. We got home despite the car blowing the head gasket on the M5!!!! 34 weeks pregnant, contracting every 4 mins, being in agony with the tens machine at full pelt, standing on the side of the M5 waiting to be picked up, was an interesting memory of that pregnancy!!!!
I am truely sorry that you are both going through this, I hope that you get some relief from the pain. (and sorry my posts are so long!!!!!)