Should I take a test??

Okay so I have the craziest stuff going on. Ive gained a little weight in the last month just like 3 pounds nothing extravagant I have crazy cravings and I’m ALWAYS hungry. Food is always on my mind. I’m on birth control I haven’t missed a day of taking it. I have acne coming out all over again and the last time it was bad I was pregnant. But my boobs have not been tender or have not gotten swollen or anything. So my question is, is boobs the first sign of pregnancy??