need help understanding.

Gabrielle • I`m 18 with a beautiful baby girl currently trying for baby # 2
Girls I need y'all help , me and husband are trying for our 2nd baby, I took 2 test on Monday of last week one at night n the other tuesday morning both came back negative, well today something told me to go look at it .. and I got this 
           Can I be pregnant.??? Or it happens?..