Millinette 20/75 pill and dizziness

Within 48 hours of swallowing the first tablet I started to have Brown discharge which has grown into what would be described as a full on period with horrendous stomach ache, it will be 2 weeks on Sunday since I swallowed the first tablet. I'm assuming this is the breakthrough bleeding and my body needs to adjust but anyone else experienced this?

I have had a great experience with Millinette 20. I got a bit of headaches and dizziness at the start but they disappeared quite quickly. Originally I took the pill back to back and then with a 4 day break but neither of these gave my body enough time to bleed, so I adjusted to having a 7 day break and that has been great. I’ve had very few side effects overall, and it’s been great.

This pill is what I am currently on, and the only pill I have tried. I've felt a mood change with increased irritability and more frequent/easily triggered crying, and have experienced significant breast growth but no other major weight gain. For me, as a 15-year-old who would prefer a combined pill to any other contraceptive method, I believe it is the best fit for me, seeing as my nurse has evaluated that it is best.