Ovulation question

Hi everyone we've been TTC for a while now, had a miscarriages recently. So a while ago I noticed that when I'm ovulating my boobs are super sore... Like can't touch them sore and then when AF arrives it just disappears. But the puzzling part is that not every month this happens, its like every other month or so. Does this happen to anyone else? And what do u think causes this? Thanks