Ali a belated but very warm congratulations to your DH for his good news. I was thinking about you the other day and I'm so glad to hear that things are brighter.
:( about R & B being off colour. F has been the same I think in the case of B & F it might be curse of the soft play centre and mixing with other unknown short folk...maybe. Despite being
about F lying on the ground firstly to have an tantrum and then to "little sleep", coming back to where we were sat in the soft play with someone else's food and attempting to pull down the flies of the mannequins on Friday I have a really lovely time too 
ILTMIMI I know what you mean about it being a new phase. I feel a mixture of happiness that my body is getting back to what I perceive to be normal and sadness that the period free time is at an end signalling the start of having to write a symbol next to day in my diary again every night.
On the subject of AF. I'm on day 31 of the cycle here. Usually it's bang on 28 days and very very straight forward pattern. Breastfeeding is really messing things up and messing with my head as I had a panic resulting in an negative POAS moment the other day. Surprised myself that I was relieved but also slightly disappointed
. After F I had a few 45+ day cycles due to feeding. We do NFP so I usually have a good idea of when I'm ovulating currently made more tricky with the feeding and postbirth messing up my hormone pattern and F& R are at a very demanding stage just now but I realised there was a part of me that would quite like to be in the 5% cohort that get pregnant using the early day rule. I would panic a bit, blinking SPD birth and other practicalities but I don't think our family is complete quite yet.
I've never used a coil, or any contraception so no advice on that but winced when you told us about the coil adventures...my goodness I hope you get it sorted soon without problems!
On the subject of shorter cycles Fizz does 14 days mean day 1 is the first day of period? if yes then it would be worth popping over to the GP to rule out PCOS or thyroid trouble however don't panic as it's more likely the usual post birth cyclic dip in hormones is causing a breakthrough bleed giving the impression that you've had a period but without the preceding ovulation IYSWIM? If period days are not included in the 14 days so say it's a 19 day cycle then just wait it out to settle if I were you and you might have just come through birth with a shorter cycle. I know my luteral phase is quite short.