Might be pregnant

Danyelle • I`m 24 with 2 kids I`m married to my lovely husband who I`ve been with for 3 year`s.
On the 8 of this month i had my period witch only lasted for 3 days and also on the 25 of this month i went to the bathroom and when i went to wipe i notice some dark brown and light pink blood so i ended up putting a pad on to watch the bleeding and it wasnt heavy at all very light and nothing was getting on the pad it lasted for a few day so i decided to take a test witch i did twice and they both came out postive with faint lines im not supposed to get my next period till the fourth. Can anybody tell me if i should be worried or test again to make sure