asking if my pregnant or not

I made sex with my boyfriend December 2019 January 2020 We are not make love the second time we make love is Feb. 2020 And I just want to ask because I had a meanstration on dec. Last week and January but not Normal only 2 days and now Feb . 2020 I feel so tired and sometimes it's so hard to breath I feel my boobs is getting bigger but I'm not yet booming and I didn't notice about choosing foods I was making diet but it's looks like not working I'm making fat . Can you guess if I'm pregnant or not ? Thank you ?