Can I preserve my fertility?

I've heard so many horror stories of women who wait until their mid-thirties or later to have children, then find out that they are infertile. I'm 25 years old now and nowhere near getting married or having babies, yet I don't want this to happen to me when I'm ready. What can I do now to protect my fertility and make sure I am able to conceive when the time is right? It's causing me a lot of anxiety!!


Why do I feel guilty after orgasming?

Every time I have an orgasm (alone or with a partner) I have intense feelings of guilt. I was not brought up in a religious household and was never told to "wait until marriage". I've been in long term relationships with all my sexual partners so it's not like I feel guilty for sleeping around. It's getting to the point where I'm not enjoying sex anymore because I dread the feelings I have after an orgasm. Is this normal?