Thank you for your question
My name is ***** ***** I shall do my best to help you
1 Since you are married it will be presumed that the child is yours - however once it is born you can ask for a DNA test - and if she will not agree then you can apply to the Court for an Order that a DNA test is done.
2. Yes you remain liable to pay spouse maintenance based on your respective incomes. You cannot be forced to give money to purchase items for the baby.
Please ask if you need further details