Boob mystery

I took Plan B last month, and bled when I was supposed to. (2 weeks later) We proceeded to be super careful during the whole month, (but I know condoms can always fail 🤦🏻‍♀️) during this month I noticed my boobs were bloated and my nipples were somehow.. bigger? This had only happened once, when I got pregnant a few years ago. So it was really really weird. And I started worrying bc the boob thing had really only happened that one time and we’re NOT TTC right now

But todaaaaay I got my period and according to my app and everything, the date is regular and accurate 👍🏼 so I relaxed

Buuuuut the boobs are still making me anxious! Do you think they could randomly bloat during daaaaaays bc of extra hormones (plan b) or something like that? Why are they bigger 😩 (they do this in a small scale while on my period but they’ve been like this for 3 weeks or so)

But I repeat, I got my period (heavier than the usual, actually) today, perfect count from last time.