Could i be pregnant and not know it yet?

Hi,
Welcome to ehealthforum,
It is difficult to comment on the altered period pattern without examining you. Unprotected intercourse after finishing with periods can put you at risk for pregnancy as you get closer to your fertile days/ovulation time. Wait and watch for your next periods. If pregnancy is suspected, look out for development of any new symptoms suggestive of pregnancy and consider visiting your gynecologist for thorough examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). If pregnancy gets ruled out consider requesting your doctor/gynecologist for further evaluation to look for the underlying cause for the abnormal period pattern. Treatment as appropriate (based on the examination findings and investigation results) would be started to help you to control your symptoms and regulate your 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.
Take care.