Bleeding Due To Taking Pills

Q: I am officially getting married on the 13th July Inshallah. So this month I started to take pills as a contraceptive means. I have to take it for 21 days, and stop 7 days and so on. My period started on the 4th June (we have to start taking pills on the beginning of the period) and finished ten days after (14th June). Today (21st June), I saw a small brown bloodletting. My doctor said that when we take pills, it could happen that we have some bloodlettings between periods. So, my question is: What about wudhu and namaaz? Should I go on performing namaaz until my next period and am I considered like a ma'zur?