IM BACK AND FOR GOOD! Motivation anyone?

I was on the outs for a while. I have 4 kiddos at home and have serioulsy struggled finding my own time to be able to get out and workout. I trained myself to get up earlier and earlier leaving the house in the morning and now am succesfully up and hitting the gym mon-fri. Its only been a week mind you but i am DAMN proud of it haha.
My question is, Mondays, Wednesdays and Friday I am hitting the treadmill at 3.5mph for 30 minutes. Tuesdays and Thursdays I joined a circuit training class. I weigh 284 (breath, yes I just admitted that to the public, sigh). Do you think this is not enough? For me i want to see a smaller clothes size ASAP. I just want to cry everytime i get dressed and dread trying to figure out what to wear the next day for work (how will this hide my gut, no my arms are showing in this, no i cant show my gigantic calves). I am so tired of living like this and want to be confident in body and of course healthy for my babies.
Has anyone done this type of routine and seen great results or do i need to push myself more?

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