five days late on my period should i be worried?

Hi,
Welcome to ehealthforum,
Usually, a variation of +/- 5-10 days in your usual menstrual cycle length is considered to be within normal limits. If you had been sexually active without protection after your last normal periods, chances of pregnancy cannot be ruled out. Wait and watch for your periods. If pregnancy is suspected, look out for development of any new symptoms suggestive of pregnancy. You should consider visiting your doctor/gynecologist for further evaluation and assistance if you do not get your periods within 10 days of expected period dates, or if you develop any new symptoms, or if you suspect chances of pregnancy. If pregnancy gets ruled out, further evaluation would be needed to look for the underlying cause for your absent periods, and treatment as appropriate (based on examination and investigations results) would be started to help you regulate periods. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Take adequate rest. Drink plenty of water. Maintain healthy diet and lifestyle.
If pregnancy gets ruled out, and if you are not ready for pregnancy, but intend to remain sexually active, consider visiting your gynecologist to get started on suitable regular birth control measures to be protected (after your periods). Be regular with birth control use as instructed. Avoid having unprotected sexual contact.
Take care.