I'm on my third pack of Tri-Previfem which is the norgestimate and ethinyl estradiol tablets. I've been taking them the past 3 months and have not missed a day. I understand that the first three weeks are the tablets with hormones.. Then the last week is the tablets without any. So I just started my new pack and I'm on week one on Friday. I had unprotected sex and my partner ejaculated inside me. Since it hasn't been a full week of hormones am I protected?