Best bet is what everyone else has recommended....abstinence....until you are really ready to settle down to a real married family....it is just too complicated otherwise for you & even a child born under those circumstances.
If I were you, I would make arrangements to find out as soon as possible. You may have many issues you need to sort through & the sooner the better.
I don't understand it, but I knew I was pregnant almost immediately by how I felt....no one believed me....I couldn't be that much in tune with my body. It was 27 years ago & pregnancy tests didn't exist.....it still took the Dr's tests. When I finally went, they verified that I was correct. It was after I was married anyway, but I still had issues about having a child.
Hopefully things will turn out ok for you,
Debbie