HELP PLEASE. birth control question!

Mikahla
Ohkay, are any of you girls taking Microgestin ? It's a birth control pill.. I was on Lutera (there were generics too so they weren't always called that but the same pill).. I switched from Lutera to Microgestin in late July early August due to severe cramps to the point I couldn't get out of bed. Now my period symptoms are still there, but manageable.. what's freaking me out is I literally don't have a period. I have all the symptoms the week I'm supposed to start, but it's only ever a light brown.. and never enough to need a tampon or a pad.. I don't miss pills so I don't think I'm pregnant.. I'm just freaking out. Not sure if any of you lovely ladies have experienced this or not! Please let me know! I might take a test to ease my mind.. also, my sex drive is like non existent on this pill where as my last one, I was dtf 100% of the time so it's worrying me. My doctor says this is fairly normal. But being an 18 year old girl, I have concerns .