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The changes in period could suggest possibility of pregnancy, hormonal imbalances, menopausal onset etc. Pregnancy chances are possible due to spontaneous recanalization of the fallopian tubes. The exact cause can only be made out after careful evaluation. Consider visiting your doctor/gynecologist at the earliest for thorough examination and further evaluation to look for the underlying cause for the altered vaginal bleeding that you describe. Treatment as appropriate (based on examination findings and investigations results) would be started to help you control the symptoms. Look out for development of any other new symptoms if pregnancy is suspected. If you suspect chances of pregnancy, 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. Drink plenty of water. Take adequate rest. Maintain healthy diet and lifestyle.
Take care.