Period question - please help

Hey everyone! I just turned 33 and for the pass 2 months, my period has been 14 days straight. Quick back story..... I went to the dermatologist and told him I break out really bad when I have my period and then my face and back goes back to normal as if nothing happened days ago. He said he had something for that and give me an injection in my shoulder. Since then my periods have been long. Had an appointment today but got canceled due to the snow. Anyone know why the change and if it’ll go back to a normal period?? Please help. I’ve been crying so much and sad about it since I seem to ovulate less and I want to have kids.