Dicks

So my boyfriend doesn’t have the biggest penis.. probably average size ? Maybe a tad smaller.. I can feel it inside me but sometimes I feel like it isn’t enough, is that bad ?! What can I do to help stimulate myself and get myself to have an orgasm. (We have been together for a year and a half & I’m the type of person who’d be okay without having the greatest sex life if it meant I get to stay with him)