Could something be going on with my cycle? Would a test be accurate now?

If you used a condom I think your ok... It's sound like your really stressing out And remember stress can delay your period or make you miss it altogether both have happened to me when I was freaking out over thinking I was pregnant. I would go and get a blood test done they can tell earlier than a urine test z d the sooner you know the less you will stress trust me the stress isn't worth it!