I am wondering if anyone has had experience with Loestrin and their cycle changing frequently. I have been on it for a year but it still seems to be change from time to time. I thought it would level off after the first few months of taking it. First couple of months my period started on the same day and lasted for three or four days. Then it changed to starting a day later and lasting only three days. Then it went to just one day then the next month back to three days again, then two, etc. Now this month, no period at all. I already took a pg test and it is negative and I took all my pills perfectly so I'm not pg. Just wondering if this is common on this pill to have changing periods month to month.