so when I first started noticing I was most likely pregnant (with my first) it was because my boobs…

so when I first started noticing I was most likely pregnant (with my first) it was because my boobs were sore and getting bigger and I could no longer suck in my stomach. at the beginning my boobs were a b cup by the time I had her they were c's over the last couple weeks they've grown to D's and it almost seems like they're reaching double D's. also I can no longer suck in my stomach again. do you guys think I should test?