Yes, I am married.
And I really would like to keep my contributions to my pension, I don't think it is fair that I need to stop because I am going to be stay at home mom (Childminders are quoting me EUR 400 per week to mind the twins and the 2 year old - South East area - very dear when you think that the 2 years old will start Montessori school in Septembre which is another EUR 50.00 a week) therefore it would be around EUR 1800 in childcare/montessori and my wages is around this amount so better for me to stay at home if working doesn't bring me financially better). I did rang my pension company which clearly stated that the contribution must stop until i am back paying income tax. They couldn't help me more, I check the website but same it seems that only working people are allowed to have a pension.
I like ObiwanKenobi answer, I guess I need to ring the tax office to have an answer but in the meantime if someone knows the solution, please post it