Hi,
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The chances of pregnancy are possible due to possibility of spontaneous recanalization of the fallopian tubes. The symptoms that you describe suggest chances of pregnancy (nausea, increased sleep, mood & emotional changes, weight gain). Look out for development of any other new symptoms if pregnancy is suspected. If you have missed your periods, or if you have got abnormal periods, or 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). 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.
Take care.