Opinions on LoLo birth control ?

I’ve been taking LoLo for the past three months. The two packs, I started immediately on the day I took the placebo pill. After the third pack, I didn’t start my period right away when I took the placebo pills.

My last period was on June 30 - July 3. I was expecting my period on August 1. I took a home pregnancy test on August 5 and came out negative.

It’s now August 10 and I still haven’t gotten my period.

Is this common when taking LoLo?