Hello pls read and help me

Alex

My period started today, 29 days since my last one started, and it started out red like normal and I had the usual cramps and then I took 3 ibuprofen to make the cramps go away and ever since, it’s been brown... I know that that can happen toward the end of your period, but is it normal for it to be brown in the beginning..? I need logical answers bc I can’t stop worrying