could I be pregnant?

I had some bleeding between periods, and when I was supposed to have my normal period I did not, and i still haven't. My boobs are super sensitive and swollen right now, even my boyfriend can tell a difference (I have really small boobs so... 🙄😂) but anyways reason I'm questioning it is because i had bleeding what should have been between periods, but I have yet to start. Could I be pregnant? Has anyone had this experience