Lol I felt exactly the same. At week 3 I went back to the gym and was doing lower body/leg workouts, week 4 light arms and by the end of week 4 I was lightly running.
The best thing you can do is listen to your body. Dont do anything that hurts, dont push yourself to your max., dont do anything high impact for at least 4 weeks. Do make sure you wear a really good supportive sports bra, if not two! I did lol.
xxx