We did use a condom and I was sick around the time I was suppose to ovulate as well
Hi!
If you were my patient, I would advise you to do a pregnancy test. That is the only way to know for certain. The home tests are very good, so if that is negative, you can relax. IF your period doesn't come within the next three months you should definitely call your doctor.
Don't forget about condoms, and emergency contraception that is available without a prescription at most major drug stores.
Good luck!
Dr B