I am sexually active with my boyfriend of nearly 2 years. (Obviously) And I am a little confused. I can achieve an orgasm through masturbation, I can achieve one through mutual masturbation, and obviously through clitoral stimulation. However, sex... I'm not sure. I REALLY enjoy having sex, and how it feels, but I don't know if I'm reaching an orgasm. I do shake and tremble, and get hot, and get the chills. But I don't know when I'm coming.
Any tips, tricks, ideas, suggestions, etc?

