question: I am pregnant and have been diagnosed with an assumed optopic pregnancy. My doc wants me to take one very low dose of methotrexate to help move things along. My only problem is that I have a 6 month old that I am nursing. My question is if my height it 5\"0 and my weight is 113lbs how long do you think it will take for the one dose to leave my system? Do you think I could pump and dump and resume nursing within a month or so? Please let me know. Thanks you!