Thanks girls!
I will just put it down to a growth spurt and stick to my previous thoughts on my cycle!
It didnt help that at the first scan they only picked up 1 bub, so i put his dating accuracy out the window as well!

Its the most confusing time for me, so daunting - but exciting ... with hubby in the navy though i do feel like im going a bit stir crazy going through this on my own atm, (he is back next week though!!) and the one thing i thought i knew was right - me and my cycle - just doesnt seem right anymore.
Hopefully I'll find some sanity next week hey!

I look forward to annoying all you lovely ladies with my silly first time mum questions!