<human>: Give me the gist of the text in a nutshell

My girlfriend and I have taken our relationship very slow. Like, we didn't have sex until a year and a half into our relationship. We don't have any christian morals pressuring us, it's just how we decided to do things. We were both virgins when we met eachother, and this month will be two years together. I really have no idea why i feel this way. I love her to death, yet everytime we finish, I have a bad feeling in my gut and I feel guilty. And she said she feels the same way. Should we stop? I have no idea when we should actually be ready to have sex. I hate feeling this way every time! Has anyone else felt this way before? Some advice and opinions would be great.
<bot>: Girlfriend and I feel guilty after sex. Not sure whether or not to wait or keep going until we feel okay with it.