nursing mania?!

I'm just wondering if anyone out there can related to how I'm feeling as a FTM who is exclusively nursing- so far. One day I feel like I'm on top of the world- latching perfectly, pleasant feedings, the whole nine yards. But other days- every feeding is wrought with disasters- not latching, screaming and pushing away from the boobs. I guess this mirrors parenting in general- but the highs and lows are so hard to take! Especially when PP hormones are making me feel all over the place to begin with!