Constant bleeding on the combined pill

Right so I missed 2 pills in the middle of my 21 day cycle of pills and I had my period 2 days later but kept taking my pill (I don’t know if that was right or not) and ever since that period I’ve had constant light bleeding the very last day of a period, it’s been nearly 2 weeks and I’m not sure what to do about it.

I’m about to start the mini pill tomorrow and my doctor said to just take them straight after I finish this pack but I’m not sure if I should wait and then start or just take them straight away