Really confused. Same urine different result.

I got a faint positive on a Walmart cheapy yesterday. Today I took another cheapy and a Walmart brand digital and the cheapy was positive I beleive but the digital says not pregnant. Im so confused. I have a 7 year old and 3 losses last year . Any advice would be great. If I am pregnant why is it my boobs arent sore at all? Lol sorry so many questions. I'll attach the pic of the faint positive thank you.