Enlarged Breasts Before Period?!

Anyone get enlarged breasts before their period starts, or should I buy a pregnancy test??

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Long Backstory; was on depo for 7 years and didn't get a period the entire time. After I stopped I had maybe 4-5 periods before I got pregnant with my daughter and I don't remember my breasts getting this huge. Also had a couple periods postpartum before I got one more shot of Depo.

My sports bra is so damn uncomfortable, and within the last few days too.

We did have unprotected sex two and a half weeks ago, but last time I got off depo it took 7 months for my periods to come back so I figured I'd still be covered, been a month that I've been off the shot so no idea when I would start.

Been having nausea but also had a stomach bug a few weeks ago that seems to not go away. (Took a test 1-2 two weeks ago and was neg)