Questioning sexuality

My whole life I’ve identified as a straight woman. I’ve always been a town boy and liked dressing more towards the masculine side, but I do like dressing up from time to time. I’ve always had crushes on guys only, but recently, I’ve been feeling some attraction towards women and feel things towards some of my female friends. I’ve never thought about being in a relationship with a girl and I feel like I couldn’t, but I’m not sure if I’m into girls or how I feel. Did any one you feel that way before coming out as bi? What was your experience like? I’ve only had boyfriends before. I’ve bust recently started feeling things for girls. What do I do? And how do I know if I’m bi?