Spotting when starting the pill

So, last month on July 19th I started birth control and my doctor told me it has a lower dosage of estrogen than most pills. I started the pill so my period could become more regular as it had always been very heavy and unpredictable throughout high school. The only certain thing about it was it always lasted less than 5 days. It has been exactly two weeks since I've started the birth control and I am spotting every day and don't know when it'll stop. I've read a lot online but never know exactly what to trust when it comes to answering my question which is: I am now on the third row of my pack and am continuing to spot, will the spotting most likely end after my period at the end of the pack or even before my period. (if not I will definitely talk to my doctor) but I just wanted to know if anyone else has experienced the same thing.