Look at the bright side: you lost 30 lbs in three weeks! That is amazing. Our body needs time to adjust, I'm only 16days out and my body is starting to look funny too, losing from where I shouldn't and staying the same where i should be losing. I am grateful for this surgery, I do not have to take my blood pressure meds no more and my BP is normal.
I know my clothes are not fitting the way they should be and just like you I don't have money to go and get me new clothes. What I do have on hand is a sewing machine to alter the pieces that are worth altering and going to the Goodwill store to get me some basic items with the money I am saving from my meds!
Hang in there, look for a support group, find the positive in this experience. There is no turning back now so make the best of it. Good luck!