Need some advice

Hello everyone my husband and I have been TTC for the past year. I have been talking to my PCP about some options and the one thing I am trying is metformin twice a day I heard it helps with ovulation while having PCOS. Well my question is for anyone that has tried this did you become more sleepy with taking it? I have been on for about 2.5 weeks and I just seem more tired than usual. I mean yes ive been working more but it started prior than that. Does anyone suggest a vitamin to take along with the metformin. Thank you all in advance and baby dust to all!🌺🤞