Several infectious skin diseases also cause a rash. These can be caused by a number of infections with bacteria or viruses, and infestations of mites within the skin. Some infectious skin diseases, such as scabies, are caused by mites that bore into the skin surface causing irritation and a localised rash.
Now, as for your question about when to start taking oral contraceptives, there's really no hard-and-fast rule about when to start taking birth control pills. Starting in the first few days of your cycle is the surest way to prevent inadvertently taking pills while you are pregnant.
If you miss more than 2 birth control pills, call your doctor for instructions. You may need to take one pill daily until Sunday and then start a new pack. Or you might need to throw out the rest of the pill pack and start over with a new pack that same day.Any time you forget to take a pill, you must use another form of birth control until you finish the pill pack. When you forget to take a birth control pill, you increase the chance of releasing an egg from your ovary.ut if you forget to take any of the last 7 (or last 4 of a 4-pill placebo pack or last 2 of a 2-pill placebo pack) out of the 28 day pills, you will not raise your chance of pregnancy, because these pills contain only inactive ingredients.