Hi, I had my last period on 12 Mar, after 15 days i was feeling vomation after having my food but did not vomit even once, after that it stopped and I found myselft going to bathroom more often and had little pain in lower abd, I was expection my period on 7th or 8th Apr as per my cycle of 26-27 day but period has not come yet, plz let me know what are these symptoms.