We weaned calves this past weekend. One of the heifers who is only 6 months old came into heat two days ago. We had the weanlings in a pen and when I went to check on them yesterday morning that heifer had gone through the fence and was in with the bulls. We were able to get her penned again yesterday afternoon and got the bulls moved to a further pasture. I don't know for sure if she got bred but she was bleeding slightly and walking like she was in a little pain. She seems to be doing fine this morning but I don't want her to calve at 15 months. I am thinking about giving her a dose of Lutalyse but I don't know how much to give a 6 month old. Any advice would be appreciated.