Vaginal pain

Everytime I have intercourse, it always hurts on my left side, it's been like this for years!!!! Started when I lost my virginty .... Age of 17 I am now 24! Got diagnosed with a ovarion cyst last January but gyno said to me this is ok, that was the first time I was diagnosed! But I've had loads of investigations! And nothing's wrong, so why am I sore all the time?