I don't know about your exact situation but I think the best you can do is every time your situation changes, ring and do another assessment. I returned to work four weeks ago after 6months maternity and am now waiting to find out from WTC if my money goes up or down. I couldn't afford to live on SMP for another 6months so returned to work and now my daughter is in daycare four days per week and I claim childcare vouchers, if I fell pregnant now then i would have to do another assessment when the baby was born because of changes in circumstances (new baby, no childcare costs, etc). It's frustrating, but I was always told by WTC people (I assume the same as CTC) that they will not assess until you are in the position that you need it. If that makes sense