really sleepy, had a lil cramping and feeling light headed

Hi,
Welcome to ehealthforum,
If you are not pregnant, your symptoms could be attributed to hormonal surge that occurs during midcycle for ovulation. Wait and watch for your periods. If pregnancy is suspected, look out for development of any other new symptoms suggestive of pregnancy. If pregnancy is suspected, or if you do not get your periods within 10 days of expected period dates, or if you develop any other new symptoms (or if symptoms are persistent), or if you get abnormal periods, you should consider visiting your doctor/gynecologist at the earliest for thorough examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). Consider being in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately.
Take care.