I'm getting concerned about my weight loss and need another perspective please

My pre-pregnancy weight was 123. My normal weight is about 113, but I had been doing a lot of weightlifting and putting on a lot of muscle prior to getting pregnant, so over the year prior I put on an extra 10lb of muscle. I had the baby around 144lbs. Once I had the baby I told myself I would not weigh myself for several weeks because I did not want to be disappointed by the weight not coming of. 7 days pp I was looking at myself in the shower thinking man it looks like my legs got way smaller. I decided to weigh myself just to see. I was 119 - almost 5 lbs less than pre-pregnancy and 25lbs down from the birth. Since then I've gone down to 116. Is this too much weight loss? I'm sure part of it is muscle wasting, but in 9 days losing about 30lbs at my size seems like a lot. Do I just consider myself lucky? Or should I be concerned?
Re: Too much weight loss?
I ended up calling the doctor and they were not concerned. They said the recent loss of my father (5 days before delivery) could have had a big influence as well.