Period or something is wrong ??

Normally I suffer with really heavy periods like can’t get out of bed periods and faint and stuff this month 3 days early I’m having very light brown discharge it’s day 2 and it’s getting even lighter I have started a mini pill cerelle could it by a symptom of it....I have being getting hot flushes being feeling really tired and also feeling sick is it just normal or could it be something else 😳😳