I need help ladies

I was not planning on getting pregnant. I am 7 months postpartum and missed my period. I’m two days late and I’ve taken pregnancy tests the last two days. I am getting very faint pink lines on the first response tests but blue dye tests are negative as are digital tests. I’m cycle day 31... I’m so confused. I thought blue dye gave more false positives? Anyone have any experience or thoughts on this?

UPDATE:

I guess this settles it. My husband is excited but I can’t get past the fear of two under two and how I’ll deal with a newborn when my 7 month old doesn’t sleep. I also feel extremely guilty as I have friends battling infertility and this came without even trying. I’m also extremely nervous to tell family who may think this is too early to be pregnant again.I hope to be excited about this once this initial shock wears off.