New and got a long journey ahead

rhiannonarmstrong31

Has my third and last baby 8 months ago. With the pregnancy I had diabetes and was bed bound with blood pressure and heart problems.
I was 15 stone 7 at the end of it...I'm 13 stone now and trying to just eat less and better and workout every day.
How much cardio should I do daily and at what pace in km per hour on my excessive bike should I aim for?