Any ANSWERS would help kinda worried,Has any women experience this on birth control!?! Seriously need ANSWERS?

Okay I've been on birth control for 7 months and everything was going fine. Until i went to my last appointment and my ogbyn told me i could skip my periods with the pill. Also i take my pill on time everyday and i try not to miss any, i havent missed any in a couple months. My partner and i used condoms. Now we use the pull out method, and each time we make sure we do it right. Back to my problem every month i take my placebo pills, since my ogbyn told me i could start skipping my periods i tried it this month. It is the worst decision ever, i get worried and stressed easily ans i usally take something small and blow it out of proportion but i dont know whats going on. The day i usally start my bleeding ( i thought i wasnt going to bleed at all) i had brown spotting light brown to dark brown with little red here and there just spotting going back and forth not an all day thing but it been everyday since i started spotting. So now I've been spotting for 10 days. Ive been reading articles online a few helped alittle bit but i just need answers for whats going on. What should i do? Should i take a pregnancy test or what? I really trust in my birth control but i just dont know whats going on, i have been nausea a couple days,but i just think its all in my head. I need answers anything helps. Thanks