Paranoid

I’m 17 and I’ve been with the same guy for 2 years. We are engaged and getting married when I turn 18. My parents are Jehovah’s witnesses and I’m not allowed to date anyone outside of the religion or be friends with them , but my parents found out about our relationship, they tolerate it, but we can’t see each other. He graduated from high school this year and we cannot see each other outside of school. We’ve been sneaking around because both of us can’t stand to be away from each other. 2 years into our relationship we both lost our virginity to each other, which was a couple days ago. We used a condom for the precum, and he didn’t cum inside of me, however, I’m still paranoid that I could be pregnant because I just have anxiety issues. My parents don’t allow me to have birth control, but I talked to my counselor and she told me that if I don’t get something like an IUD or a implant, that I could be expecting a baby soon if we don’t stop having sex. The problem is though, I don’t know how to get those things without my parents knowing. If my parents find out I’m sexually active, I’ll get punished and have everything taken away especially my phone because they have such strong views against premarital sex.

If I tell a doctor I’m sexually active could they tell my parents?

Under the circumstances could I be pregnant (or paranoid) ?I wasn’t in my fertile window.

How do I get the birth control I need without my parents knowing?