Period symptoms

If you’re pregnant when it’s around time for your period are your boobs still gonna hurt and your moods be changing and what not? Or does this only happen when you get your period. i.e my boobs have been hurting for about a week and just going away and I’ve been emotional since yesterday. But I haven’t gotten my period. Is it late or am I pregnant and I’m still getting these symptoms anyways? I took a test today and it came back negative but maybe it’s too early?? I hope I’m explaining myself correctly. Please help!!