hi..if you are planning for conception, which ended up in abnormally heavy menstrual bleeding, then it could be a sign of abortion
which is quite common. if you want to confirm, then you have do urine pregnancy
test (home kits available). if you are worried, then forget about it and better luck next time. All your other symptoms can be due to menses or pregnancy. start taking folic acid
5mg tablets once a day if you are planning a baby. have nutritious diet. all the best.