Girls, should I wait or buy a bigger bra now?

Anonymous
I was wearing a 30GG for awhile and I've noticed that the cups are now a little too small. I measured myself and saw that my bust grew an inch and a half. I tried losing weight (and I even went down a band size), but my bust not only didn't shrink, but it grew a little more! My period is coming up in about two weeks and they usually puff up around this time and sometimes they shrink back down and sometimes not. Do you think I should start buying a bigger cup size now or wait a bit?
Updates
+1 y
And my nipples are a bit sensitive right now XD
Girls, should I wait or buy a bigger bra now?
3 Opinion