2nd month on IUD

Ok so i got my IUD August 17th I decided to get the skyla.. so now im Experiencing like a lot of brown discharge i believe last month i got my period 5 days ok cool havent gotten it since then im not trippen but then this month i have had a day where i was spotting like light pink and it was just for that day... i get cramps there and there you know.. i believe im not preggo i doubt it actually. just found it weird now i get brown discharge now but no period.. Idk its just

odd i know my period was going to stop eventually happy it did cause tired of spendin money on these expensive ass pads. LMAO what do yall think should i be fine or should i take a preggo test?