Scared of getting pregnant

so I have always struggled with the overwhelming fear of pregnancy. Every time I have sex, I have a breakdown a few days later, mortified I’ll be pregnant. I use my pill perfectly, the same time every day, and I always use a condom. I know my facts and statistics, I know how slim the chances of pregnancy are while using both methods. Yet, I keep myself awake at night fearing it and make myself sick over it. I often psych myself out and “experience” symptoms even though I know its in my head. What do I do about this? Is there anything I can do to get over this fear? Have any of you experienced this and have any tips/advice? I appreciate any feedback.