Hi Im 21 Years Old. My Cycle Is 32 Day

Hi im 21 years old. My cycle is 32 day cycle my period begins every 18th of each month i last had sex with my husband late monday night about 12 am of the tuesday morning on July 28th my period started 18th of July and ended 26th of July . I am late 5 days today aug 22nd. yesterday aug 21st, i started a light pink and brown discharge but very light and faint and today aug 22 i feel mild cramps and have light orange/brownish red light bleeding and i am not sure whether its implantation bleeding or ? Please help