Fenugreek question

lckcdc3

Hi ladies. I have EBF DS and I haven't had any issues with supply until recently. DS and I were both sick for the last 2 weeks and my supply seems to be dropping when pumping during the day while DS is at daycare. I drink lots of water. I was thinking about taking fenugreek to help boost my supply but the bottle at Walgreens specifically said do not use if pregnant or nursing. They only had one brand so I couldn't compare to others. Do all fenugreek bottles say this because they are herbal supplements not regulated by the FDA or what?