Pregnant?

So I’m 6 weeks postpartum and my husband and I have have had sex. Sorry if this gets too but the first time he just put the tip in and the day after I took a plan b. Then another time he pulled out. All the other times where protected. I’m freaking out. I don’t know if this is a for real positive and I asked my ob if I can do blood work. They are pretty faint though. Also I had a negative Saturday then today I had the two positives tested again then negative. I’m going in for blood work tomrrow.

Picture of the left is positives and right is negative

^^ negative

Positives