It's not normal to have irregular periods  ( early or late), missing periods, spotting between periods, prolonged heavy flow, pains and cramps during cycle, PMS and mood changes before periods, PCOS, Fibroid, Endometriosis,  fertility issues, tiredness, hair fall,  sleep disturbances, weight issues etc. If it is happening to you,  it's a sign of underlying  hormone  imbalance  which needs further evaluation with blood investigations , scan etc.Good news is that all your problems  can be totally  reversed , not by masking the symptoms  with pills but by addressing  the underlying  cause of the problem and healing it from the ROOT cause which is not in your pelvis BTW. Hope it helps.....

Chances of pregnancy is there.So first confirm by Bhcg or urine.If both tests are negative then take tablet for withdrawal bleeding.After getting period meet to gynaecologist and start treatment for pregnancy.Get done baseline ultrasonography to know the condition of ovaries.