Losing baby weight

Evangelia
I gave birth in November and after the 6 week wait and a couple medical issues after I got the okay to exercise. I started in the middle of January (about a month ago) and I have not lost a pound. I have been eating well and doing yoga 3-4 times a week and I can't seem to lose it. It's very discouraging and I feel like I won't be able to get it off. I want to know if anyone has/had this problem with stubborn baby weight and how you got it off or are getting it off. I want to lose 30 lbs!