If you started on the 13th, thats only 11 days, counting today too. That, IMO, isn't long enough of a time frame to get an idea of what your body will REALLY do on a new work out plan. Cardio helps you lose weight, too. I've done nothing but cardio (walking, running, several billion DVD's, lol) since I started my journey, and it's always been fine.
I started HIIT and stregnth training at about 205 and was literally stuck between 205 and 200 for over a month, it was 42 days, actually.
Do you enjoy the cardio? If you do, you gotta keep going. You'll get results, you have to give it time, though.
JMHO.