5 weeks postpartum

Hey ladies! I will be 5 weeks postpartum tomorrow and I have a few questions. I stopped spotting a little while ago and today I started spotting again. I am breastfeeding and pumping. Could this be my period returning or normal spotting? Also my husband and I would like to get pregnant again eater quickly but with me breastfeeding I'm afraid it's going to be really difficult. Any suggestions?