TTC while taking BC INFO

So my Obgyn decided to put me on birth control to regulate my period since ive always been irregular, anyone else had their doctor to the same? Did it work to help conceive? Do I take it and once my period comes stop the BC so I can conceive? I'm so confused and didn't ask her. She just said she wanted to regulate my periods first but I just don't get how this would help... Any info would be great 😊😄