What's up with the effly beans?

Either I'm poo obsessed, or it really is to do with poo (or both) but the efflybeans has been seriously scrumbly this last week. I'm pretty sure it's to do with the change in his poo habits - he went from pooing 6 times a day at birth, to pooing every 2-3 days for a couple of months or so, then to every 3-4 days for the next month or so, and recently he's changed down a gear again and will poo once a day for a couple of days, then will let it build up for 3 or 4 days. For the last couple of weeks he's had gaps of 5-6 days between poos and is noticeably grumpier the longer he leaves it and has been doing the most poisonous farts known to man.
Understandable.

Yesterday was the worst so far - he was seriously upset and crying so insistently I thought I might have to take him to the doctor's. But if I picked him up he seemed to calm down, only to kick off again when armache kicked in, or Jambeans need some attensh and I put him down. Then I'd get a bit unsure and go through the drill - is he hungry? does he need burping? is he full? does he want a new nappy? is he tired? etc. etc. and the answer always seemed to be yes to all of the above so I spent the whole day alternating between carrying him, feeding him, jiggling him, changing him, mopping up his sick (changing many t-shirts, and i've already been through two so far today), getting him to sleep and yet he kept crying. Unrewarding and tiring work, especially as Jambeans started to feel left out and would start whining at just the wrong time.
But then at 5pm he had a huge squealing/ screaming session (totally confusing as squealing is his happy noise and screaming means the opposite) finally did a 6-day poo followed by another big squealing sesh - no screaming thankfully; a little bit of milk, then the world's biggest burp right in my ear before conking out for a nap. (Typical boy, I thought.)

After that, aaaaah, all calm and coos and smiles and giggles. So I thought that was that. But then today - same again. Total moaning and crying fits interspersed with vomiting, fussing at the breast and then sleep. It's frustrating because I genuinely have NO idea what is going on but I suppose I'm not too worried. At least I'm not too worried when he's asleep.

But in between it all the darlings managed to pose for this gorgeous photo. I look at it and melt and it makes it all worthwhile.