DS and I having severe mood swings from slight weaning?

[Calm]

My son is 3 in a week and I have been bfing twice a day for about 18 months.  Upon wake up and at bedtime.  

The bedtime feed has been every other day or less for a couple of weeks, because we have taken a new family ritual of watching animal docos after dinner and he often falls asleep sitting on the couch.  So I don't know if it is officially "child led weaning" as much as just happening.  

However!  Both of us are an absolute WRECK.  It only dawned on me today that this might be due to weaning so I did a google and found that even those who did gradual weaning like me had issues even if it was only one feed a day that they stopped giving.  This has given me hope that my child has not turned into a total BAST*&D and I am not becoming a total B*&ch.  

I am crying, depressed, lost, tired, yelling (unusual for me, even when pregnant).  My son must feel much the same because he is a tyrant, bless his yelling, demanding, tantruming cotton socks.  He flips out at the smallest things.  He is also VERY clingy, I can't even go to the bathroom, he starts screaming and crying and dh says he spends all his time away from me repeating "mama mama mama".  

Tell me I am right in my diagnosis.  I don't know how much longer I can hang on before I start to push the weaning a little harder.  I don't want to upset him so I won't push anything on him but I'm fairly sure I could make it happen without him noticing, sort of like how it is happening.  Offering him a water when we wake, etc.  DH thinks part of it is emotional, not just hormonal... that DS is seeing the end of it and has gotten clingy.  Wouldn't DS ask for milk more often, if that was the case?  DH also said to him the other night that one day he won't have milk anymore, just like daddy and DD, and he looked a little taken aback (I was cranky he said that to DS, could that have triggered this reaction?).

Lastly, is there anything I can take that will help my hormones balance out... specifically the prolactin, oxytocin and other bfing hormones?  I like maca, and take that when I remember so I should try that again... just wondering if there was something else because all a google returns is sage and other things that dry up the milk but nothing that helps this awful emotional turmoil.