I was cold too! Currently nursing my ginger and lemon tea and room temperature water, with my cardigan on my lap to prevent my tummy from getting too cold - ha!!!!
I just needed to do something in addition to the obvious (!!!) that made me feel I was being proactive, there is a LOT of waiting around with TTC - they go about the TWW, but there are TWO TWW if you ask me!
Lots of luck to you - when I started doing some of the stuff from the baby making bible i got pregnant last time so hoping it works again...!!! (I do feel like such an idiot going "my ovaries are preparing to release a healthy, fertile egg" in the mirror each day though - ha!!!
XX