My period was a week late then lasted for two days

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Hi! I have been taking the pill for about four months now. Before the pill I had the iud. My period remains pretty consistent. It usually lasts about five to six days and is heavy for the first three days. This cycle my period was 8 days late. I wasn’t sure if I had started my period because it was so light. It was light pink/red. I used a tampon and it only covered a tiny spot. Now I’m not bleeding anymore. I will occasionally have brown on my tissue when I use the restroom to pee. This pack of birth control I missed two days. Not sure if my period is just irregular this month or if I should test. I’ve been feeling super tired and fatigued. But I’m also getting a cold. Not sure if that has any correlation.