Heavier, prolonged period and spotting

I've always been fairly regular as my period goes, bleeding every 28 days like clockwork. I am not on birth control but started taking a new anxiety med 3 & 1/2 months ago and have upped the dosage twice since then. Last month I began to notice I was spotting on and off out of cycle, heavy enough that i would think my period was starting early, only for it to stop and come back a couple days later. When i finally did start my period it was initially light flow, (as expected since I'd bled the previous week) but my flow steadily increased and my concern began to mount since it'd never been that heavy. With my menstrual cup i measured the amount of blood and found that it had surpassed what would be considered heavy (60+ml I believe), and It'd continued for 7 days, when my regular period was usually only 3-4. I want to know if this could be a potential effect of the medication, and if it would be worth going to see a doctor for?