Used condom but now experiencing symptoms, could I be pregnant?

I recently got married and my husband and I are enjoying the honeymoon phase. We had sex over my ovulation window several times but used a condom each time so thought we were safe. However now a week or so later I’m experiencing many of the common pregnancy symptoms and some of the less common ones and have been for a few days. Is it possible/likely that I am pregnant and that I’m already experiencing symptoms or am I just stressed and causing phantom symptoms? I’m planning on talking to my husband and telling him my worries tonight after I get home from work and probably taking a pregnancy test after that. We aren’t ready for a child (young newlyweds who can barely stand on our own two feet as is with both of us working) but personally I could never have an abortion and doubt I could go through with putting a child up for adoption. Is it possible that my worries of possibly getting pregnant and not being able to care for the kid is stressing me out and causing phantom symptoms? My period isn’t due for another 8 days.