Positive? False positive? Defective test?

I’m gonna get some hate on this one so posting anonymously.

I’m currently breastfeeding my now 2 1/2 month old. I know you can get pregnant while breastfeeding and I know it can happen even after just one time. We had sex one time 2 weeks ago we hadn’t been to the store yet so we used the pull out method (I know this is not a good form of birth control) and I just got done with what I assume was a light period. I took these and I swear I see a cross on the blue but the pink one is funny looking to me which is what the last pink one looked like before you could see the second line. It took us 4 years and one miscarriage to have the angel we have know I’m really not expecting to be pregnant again. However I am in no way upset if I am. Can you get a false positive breastfeeding or is maybe some left over hcg?