A belated congratulations to you Ash

I just found this thread as I'm having a sudden freak out about maybe being UTD. Not that it would be a bad thing, it's just not at all in our plans for now. I had decided that 2012 was going to be about getting more ahead with our finances and me getting fit and healthy (currently 12 kilo's lost, 20 to go)
DH and I have only used condoms since DS was born. But we do make sure we're very careful and use then correctly. I know for sure though that we DTD during O time this cycle. If I were preg I'd only be 8DPO but today I've had lower back ache, cramping and also achey legs. I've also been dashing to the toilet more than usual. I know the chances would be slim, I mean how many people realistically fall preg when using condoms. But now the seed is planted in my head and I'm so tempted to buy a FR on my way home and test in the morning (I got a feint BFP with DS at 9DPO last preg).
EEEEKKKKKK!!!!!!