You might want to wait a bit longer than a week before testing, since it's unlikely. If you happen to get your period soon, you'll know the answer without buying a test.
This was a common myth many years ago - that you couldn't get pregnant while breastfeeding, but that's the reason I have a baby (age 41) brother!
U think I shud get test or is that an overreaction?
Most definitely you can! My doc says bc right away after there is a kind that does not harm the baby so you can still bf
Breastfeeding is not contraception. It can help delay your periods for a long while but to be safe I would use condoms or the pill if you are not wanting to conceive any time soon. I doubt this early you have anything to worry about but just be careful in the future.