Periods Problem. In so much of tension.

Hi, We got married two years back. My wife has regular periods cycle but always she has to bear lot of pain in all over her body. But last month she missed the period we have used pregnancy test & result was negative.It is almost 22 days over but she didnt get period & everyday she is suffering from body pain like she is in period. One thing to add we did shifting of our house last month 28th which is her period cycle. So is it the reason she missed. We checked with dr and she did blood test but result was negative. So she gave few table to get period. She took for 1 day but my parents are not advising us to take that bcz it may impact in future. Please tell us wt to do. Yesterday she get little blood while doing potty from anal is it bcz of that or some time she has constipution problem too. Please advise we are in so much of tension.