Suddenly barely bleeding during period

Hi all,

I, 19-year-old female, have been experiencing irregular periods for the last two months. I’ve been on a low estrogen bc for the last 6 months and my period were regular, 6-7 days medium flow. The last two however are extremely light, like I’m barely bleeding, more like spotting. Bf and I always use protection but I’m going to get tested to rule out pregnancy. I’m just worried and overthinking. Any advice / suggestions?