Babies 13 months apart?

I just had my little girl Feb 2019 and am feeling a little off the last couple days. I took a test and it’s very faint, but I think I see something... my periods have been irregular due to breastfeeding and on a low dose pill.... do you ladies see it too or am I nuts?

Also have any of you ladies had babies 13 months apart by c section? Did everything go ok?