Hello,
These can be the symptoms of pregnancy. There are sensitive urine and serum pregnancy tests which can detect hcg levels as low as 20 Miu for urine and 5 Miu for serum hcg test, as early as 8 to 12 days post ovulation. These are highly sensitive tests. The results can be confirmed by a pelvic ultrasonogram to visualize the intrauterine gestational sac and a positive fetal heart sound.
I hope it helps. Take care and regards.
have you had unprotected sex? if so theres a possibility you might be pregnant. have you taken a home pregnancy test? the 1st urine in the morning will give you the most accurate reading