Is it possible that my breast milk is bad?

Maybe. If there are drugs in the milk from your own system, possibly. Otherwise, unlikely.
No. No, breast milk is the best nutrition for your baby. If you have concerns that there is something wrong, or that your baby is not satisfied, you should contact your pediatrician to discuss. There are a few medications which can be transmitted to the baby, so always check with your OB or pediatrician before taking medicines.

Related Questions

Are plastic bags for breast milk bad?

Glass is better. Make sure your bags are bpa free. Glass bottles are much less toxic. Read more...

Is it bad to not have breast milk when 37 weeks pregnant?

Breast milk. No, not at all. At this point of your pregnancy, you will only have colostrum. Regular breast milk will start production after your baby is delivered. Frequent nursing will induce more milk production. Read more...

How can I ship breast milk?

Yes you can. Apparently if you do it properly you can ship it. If frozen you can keep it frozen with dry ice or if you want it refrigerated use gel packs. Ship it overnight with one of the express carriers and make sure they are aware of the contents. Read more...
Dry ice. You can consider sending frozen breast milk on dry ice, but you will need help finding it. Read more...

Tips to reduce breast milk?

3 main plans. Some prefer a quick method, bind up with super sized ace wrap & or pre-pregnancy bra & stop all feeds.You are miserable for a while but it works. Some drop one feeding a day until their supply drops off. Some use the baby or a breast pump to soften the the breast when it gets painful but but only enough to release the pressure while supplementing baby for the rest of the feeding. Read more...