Still no EDD

I had 2 periods in March and nada in April (I do know when I ovulated, because I was tracking because I'm still nursing). I've had 2 transvag sonos (because of bleeding), but still no official EDD. We finally saw a heartbeat, but I'm on pins and needles to make sure this little gummy bear is still growing. 
Anyone else still have an EDD that's up for debate?