I am fairly new to goats but I have one doe that kidded twins in Feb. I know how she looked when she was pregnant. This doe I bought at 10 months old and bred her to my buck who was about a year old. I watched him and he looked like he did a good job. This doe is due end of June and I see no signs. Her body doesn't look like she is pregnant and no filling of udder but yet she has not been back in heat as the buck is running with her and she runs from him.. She is Nigerian dwarf. What do you think?