Im on the trinessa (norgestimate and ethinyl estradiol) birth control and im on my period if i miss 2 pills will it stop?

Eventually: Missing pills will cause breath thru bleeding. If you miss a pill you should take it as soon as you remember and if you miss2 take 2 each of the next 2 days. If you miss more, throw the pack away and start a new one the next Sun. Use a back up method (condoms) until the 3rd week of the package at least If this happens often consider a long acting method such as implants, IUDs, or even Depo-Provera