Over trying

Have been having unprotected sex for over about a year now and still no baby, this is my 3rd month tracking, af showed yesterday, I really thought this was the month aswell as me being 6 days late mmm I feel like I can't have children, I've been on the pill for like a week & abit then I got off it! I have sex every 2/3 days every single month! Possibly infertile?