I suspect it's nothing to do with what you've taken in the past, and more a sign of what your own hormones are up to now. In peri our own hormones are all over the place and no two months are the same (as we know to our peril!). I think it's progesterone which causes sore boobs, whilst estrogen causes them to inflate (in some people). Have cut and paste some info from another site. On four pumps it's possible you're occasionally still ovulating, hence the reason your boobs are feeling like this.
The reason I say this is that I first had this symptom about four years ago, before I'd considered taking anything (despite then being pretty flat chested, I could no longer stand sleeping on my front!). I also noticed it (less severely) when I first took Q, but it went after a month or so.
B x
A relative oestrogen excess may be associated with symptoms that are similar to early pregnancy:
• nausea
• dizziness
• bloating and cyclical weight gain
• vaginal discharge
• breast fullness
• low libido, especially if not associated with low mood.
A relative oestrogen excess can also be associated with the following conditions:
• benign breast disease
• fibroids
• endometriosis.
A relative progesterone excess may be associated with the following:
• acne
• hirsutism
• vaginal dryness
• sustained weight gain
• low mood
• low libido especially if associated with low mood
• breast tenderness
