Implantation or period?

Alexandria • Its time for our rainbow baby!! 🌈👶💑
So my husband and I are ttc. Well we were. We found out he's deploying and I don't want to do all the baby firsts alone. Or I at least want him to know I'm pregnant before he leaves. I had light blood around 3:30pm today and I'm curious as if it's implantation bleeding, or if my period came almost a week early. (I do have an irregular period but never by this much). Thanks for the help ladies. :)