Brown discharge after missed period, am I pregnant ?

I missed a period last month in January n it came bk on for 5 days bleeding n turn brown could u tell me wat that is

I am 13 weeks pregnant and I’m having brown discharge along with cramping. I’ve never made it to 13 weeks is this something I should worry about?

I am currently four weeks pregnant and I am having some bleeding and brown discharge and real bad pelvic pain