Pregnant and ate something I shouldn't have. Help!?

I think I may have accidentally ate some undercooked ground beef. I went out for lunch to a buffet place and picked up some sheppard's pie. It was sitting in a hot area for while (hot water under it to keep it hot.) When I got back, I took it out of the container and microwaved it for about 2 minutes. After several bites, I looked down and realized that the meat looked pink! I dont know if that is becuase it was in a mixture of some kind to make it look pink but I threw the food away and am now in panic mode! I'm 24 weeks pregnant and am so afraid I hurt my baby. Help!