can someone help me ?

im a bi girl ive dated women and men i did like them but when it came to physical relationship i couldnt bear it ... im more into emotional stuff and things got pretty akward in my relationships and girls thought i used them but same things with men i didnt like any physical contact i some times couldnt even bare kissing and stuff i just wanted to throw up some times so if someone can explain what is happening it would be really cool from them ...