Putting on Weight Slowly

I have not weigh myself for more than a year. And after the holiday, my skirts could not fit me anymore. So, I weigh myself and had a shock in my life. The heaviest ever!! and I am not telling the number. Sigh…..
I run twice a week, about 2.5km each run. I go for yoga once a week. I had not been doing any sit-ups or stretching. I had been eating and sitting down a lot for work. Bad bad…
I need to 'reboot' myself and watch what I eat. Time to google for some exercise for flat tummy and firmer butt. Sigh….