Help!!

[Bbynme25]

Hey ladies, I just finished breastfeeding my daughter after 8.5 months. I started weaning her at 6.5 months and I got my period as soon as I started weaning. My period has been normal for 2 months and now that I'm completely finished breastfeeding its late. I started spotting and thought I had got my period, but then nothing after those few spots. A few days later I got another few spots and that's it. I've taken two pregnancy tests and both were negative.Hubby and I haven't been using protection and had sex (i think) around ovulation time. Its hard to track your period after not having it for over a year and a half. Not sure whats going on..maybe some of you have some insight? Thx!