Please help!

I’ve been on birth control for over 8 months and have had a regular cycle with it for the most part. When I first started I would have some brown spotting with no cramps a couple of days before my placebo week would begin. After about 4 months I feel like my body adjusted to the pill. Now about 8 or 9 months in I’m supposed to start my placebo week on Tuesday and yesterday morning noticed brown spotting in my underwear and am having only mild cramps. Since yesterday the brown spotting has continued and so have the cramps. From my understanding I thought I would only get that when the placebo week started since I am still taking the active pills. I’m 21 and have been having sex with this guy we always use a condom and I take my pill at the same time each night and have never missed one. This happened to me before when I wasn’t using birth control. Any advice or similar experience would be awesome, since I’m freaking myself ouf haha