growing or something else?

ok I'm 19 and my periods are irregular and I lost my virginity in August of 2017. And my last time having sex was January 31st. And I didn't have a period all of February but it showed up March 10th and it wasn't really that heavy. There was just alot of cramps. Before that my boobs were sore around the end of February and usually the tenderness and swelling goes away after my period ends. But it wont go away. They're sore all the time and really swollen and the veins are almost purple. Its pissing me off because I can barely wear a bra. And I'm only a 32a. Would they hurt like this is they're just growing? And also I'm still having pms symptoms after my period so wtf? Anybody have a clue on whats going on?!