BF and smoking

Breana • Had my rainbow on 12.4.19 💕🌈 Miscarried 12.14.18 👼🏼

I am not really a smoker but I’ll hit my fiancés pen maybe once or twice a week, but I’m breastfeeding my two month old. Will it get in her system or have any effect on her? I’m not very knowledgeable in the marijuana area.