Prolonged bleeding & desogesterol


@Dr_Paula wonder if you can help…
Was put onto desogesterol 2 months ago (as contraceptive & help with heavy / painful periods)
Since being put on desogesterol my periods have come as normal but now last over 2 weeks long.
Is this normal ? Will it settle down or do I need to change to different pill?

Have trialled multiple combination pills in the past & none agreed with me.

Any help or advice would be amazing thank you!