Lamictal and spotting

I have been on lamictal for almost a month tomorrow. Three days after starting lamictal I got a light period for seven days a few days after that stopped I started spotting and haven’t really stopped spotting except for a few days. Basically I’ve been either on my period or spotting for most of the last month. Could it be the new medicine? Do I need to mention this at my next appointment (my psychiatrist is a man and I’ve only saw him a couple times I’m worried it could be awkward)?