What's wrong with me..

Haley
I had my baby 10 days ago.. C section. 
She's more or less the perfect , she doesn't cry unless she's hungry or I'm changing her diaper or clothes. She sleeps most of the day and I absolutely love playing with her /holding her. She eats every 2.5-3 hours I'm breastfeeding and pumping a few times a day.. My husband has been more than helpful!! I have a 3 year old that is adjusting well but I'm still so sad... I think part of it is being confined to the house. I worked until the day I went into labor so I'm used to being out & about. I'm taking off until she is 6-8 weeks and I still have 6 days left until I can drive. Every time my husbands leaves the house I get sad. I have both my beautiful babies here with me and I should be overjoyed but I just want to cry. Is this ppd or will it get better in a week or so when I can do more. I feel like I'm going crazy. I feel so happy  then five minutes later I'm in tears. For example.. I was laying in bed with her on my chest, just finished feeding her.. My husband came and lifted her off of me and said he wanted to hold her for a while and I immediately started crying uncontrollably until he put her back. Advice ?