Too much weight

Today I had my 24 week appt and the doctor said some hugely condescending stuff about my weight gain since my last appt. Like I don't know that it is supposed to be gradual. I'm not eating that badly either so this was super frustrating. 
Needless to say I should be doing more exercise. I'm looking for some suggestions of DVDs or YouTube videos I can do at home. I already go to yoga weekly, so looking for something a little faster paced. 
Thanks for the advice in advance!