How can I enjoy sexual activities when I have such bad anxiety?

So in the past I’ve had a few pregnancy scares and I’ve grown such anxiety from them. Even If I do anything sexual like oral or fingering with my bf, I get so scared and I’ll break down crying and have a panic attack because I fear the thought of getting pregnant even though I haven’t had sex in many months. I overthink the slightest things like “what is he had cum or precum on his fingers?” Even though I make him wash his hands before hand as do I. I just wanna enjoy it but can’t. Does anyone know what I can do to help relieve this anxiety and stress? I’m currently seeing a therapist about it.