implantion or period ?

I haven't had a period since I had My daughter April 23rd. We have been TTC since 5 weeks PP and I spotted some starting Tuesday just brown when I wiped then got a little heavier put a pad on but only a few drops on it then back to when i wiped. Then nothing on Wednesday then same spotting on Thursday and nothing yesterday woke up to a spot of blood in my underwear this morning put pad on then nothing again. I am having symptoms I had with my daughter. I'm so hopeful but I tested today and was negative but gonna wait and test again next weekend. Just want some opinions