Hi Doctor,My wife is suffering from a missed period from past 13 days. Her actual period supposed to be on 16th May, considering the earlier months date (+30). Her cycle is usually between 30-35 days each time. She is now suffering with severe headaches, stomach pain from 7 days.We had unprotected intercourse on 17th May. We tested for pregnancy indications thrice in these 13 days with home based testers, all shown negative. Recent test was on 27th May early morning.Last month (8th April), we had unprotected intercourse and as we weren t ready for a baby, she took contraceptive pill (iPill) on 9th April and her period came on 16th April as usual. But this month she has not got it yet and we are really worried as we are not planning for a baby now.I took her to a doctor recently and she told the delay could be due to stress and the summer season. She prescribed to use a tonic (M2-tone) for three days and even then if it doesn’t come, go for blood/urine test. She had been using the tonic for 2 days, but there is no period yet.Can you please advise on what could have been happening in this case and can you suggest any medicine/alternate please?Thanks