how to stop being nervous

I am on birth control and I take it reliably with a two hour window every night like it says. He also wears a condom and pulls out. He is my first sexual partner and the sex is amazing and intiment and it makes me so close to him and happy. But what sucks is that even though we take every percaution possible I am still terrified of getting pregnant. I also don't get my period ever so I never bleed I only get emotional and hungry. So I am worried that I'm pregnant when I don't get my period even though I never get my period anyways. How do I stop getting so nervous about this it's messing up my connection with him.