Hi there, I started back on my regular birth control pills (I had been off for 3 months). Five days after starting the pill I began to have spotting. After three days it turned into a heavy flow. The blood was dark, almost brown in color and smelt like "ol

May be normal. It is not uncommon to have break through bleeding on the first package of pills when first starting, restarting, or changing pills or any time you miss pills or take one late. This should be better on the second package and gone by the third. The other consideration with breakthrough bleeding is the possibility of an infection. If this continues, you need to be checked to rule that out. Be well.