Quoting THE KATIE PRICE:" I've had a feedback inside. An adult. I freaked the smurf out. They don't live near each other though, ... [snip!] ... thing terrifies me. I'd personally look under everything in your house. They build messy sticky webs under stuff. Eeeeeew."
Oh that's comforting that there's usually only one (I tried google but couldn't find if one means there's more around) I tore the lounge apart looking for more and didn't find any webs.
I'm hoping that it was just that one brought in from outside, because SO was working on a car where there was a huge fat redback under the hood. He brought his tools inside when he was done so maybe it came in on them. That or our dog who I let inside today because of the heat (he's always under the house which most likely has heaps of spiders)
I did find a site that said babies are white or have a white dot on their back so I think it must've been an adult. UGGHHH I keep feeling like something is crawling on me. I need to stop looking at these websites with pictures of spiders lol.