I'm wondering how the OP got on - did you get to speak to a medic about your coil?
I'm also concerned about what's normal and what's not, so I am glad that you're having this discussion. I had a T-safe copper coil fitted on 20th Dec 2011. I have not had kids, and it was very painful getting it fitted. Apparently I have a tilted womb, which I was unaware of until now.
I had crampy, PMT-type pains for a couple of days afterwards but they seemed to subside. I also seemed to ovulate normally (judging by my cervical mucus) and at the right time in my cycle. Since then, however, I have had some bleeding. It's heavier than spotting, and feels very much like a period, although it seems to only last half a day. It has been happening most days since I ovulated though.
Also, although I feel fine in the mornings, if I have been sitting for most of the day (as I have to in my job) by the afternoon I have a PMT-type ache in my abdomen.
I had another coil fitted about 2 years ago at a different clinic and when I was with my previous partner and had loads of problems with it. It felt wrong right from the start and I ended up in A&E with contractions although the nurse who examined me said it was in place. IIRC I slept with my partner once with it in, had bright red (fresh, rather than menstrual blood) spotting, and had it removed as soon as I possibly could.
This one feels much better than that, but I am concerned that I seem to feel PMS-y every day, and am bleeding so often. I certainly don't feel like sex at the moment, which sort of defeats the purpose of having a coil put in! 