What do you do to help hormonal lows?

Hello ladies! In my 30s TTC #1, in the last several months or so I've noticed I get a bit depressed shortly after ovulation until AF while I'm PMSing. Not so much as moody but very blah. Anyone have any suggestions? Maybe specific vitamins? I'm a very positive upbeat person normally except for those few days. My doc suggests a mild antidepressant but I do not want to go straight to the medicine cabinet. What do you do when AF leaves you in the dumps? Any ideas would be great! 😉 thank you