Hi, If you had unprotected sex and missed your period for more than 7 days, get a urine pregnancy test done using the first morning sample of urine. This is the easiest way to know about pregnancy and it can be done at home. The possibility of pregnancy cannot be ruled out. The headaches and troubled sleep are due to the subconscious concern and stress regarding the uncertainty of this pregnancy. So get a urine test done and you will feel better once you know the status. Regarding the vaginal discharge, it may occur in the latter part of a normal period cycle due to action of progesterone or occur in early pregnancy or due to an infection. So get a pregnancy test done. If the discharge does not itch or have a bad smell do not worry as if the periods come it will most likely go away. If it doesn t you will need a gynec examination. Weird noises in the stomach may be due to indigestion. Try to eat a simple low fat and low fiber diet like clear soups, rice or oat meals and juices for a day or two. You can also try some B complex or pancreatic enzyme tablets that help in digestion if the symptoms do not disappear with simple diet. Hope I was able to help you. Thank you for the query. Have a good day.