Girls, hi! Who's on contraceptives, tell me, I'm taking pills for the …

Girls, hi! Who's on contraceptives, tell me, I'm taking pills for the first month, in the middle of my cycle and already for 1.5 weeks there have been bloody discharge in small amounts. Is that normal? Did anyone experience this? I think it might be due to hormonal changes, as I've never taken contraceptives before, so I'm facing this for the first time. Maybe they don't suit me...