I have been married for 1 year and 5 months now. We have been trying to conceive for last 2 months. My period is due on 3rd July. Usually, my stomach starts to hurt 2,3 days prior to my date. However, this time its been 10 days that I am experiencing an unusual pain in lower abdomen . My lower abdomen feels very heavy and I also feel a kind of pressure or thrust (which worsens as the day progresses). What could be the possible reasons for the condition ?