Mensus problem. Also paining what to do?

Last period was very light for 1 day then stopped then started again spotting for 1 day before that I started with headache constipation lower back pain abdominal cramps which continued didn't stopped and now next Tuesday I was due for next period Breast pain was on and off Right shoulder is also paining What to do?? Is this normal Previous history Had a 4 months missed abortion in Jan In Feb done laproscopy due to extreme stomach pain Reports were normal reason for pain was infection After that bleeding continued so took sysron ncr for 1 month After stopping medicine bleeding again stated so took novelon tablet for 3 mnths stopped in June. My June period was also very light only for 2 days Is this normal Or should do some test What it could be