Might be pregnant????🤔🤰🏼❓

I just got off birth control 2 months ago, I started my period the 1st of August. My period was VERY light, only lasted 3 days. I’m currently now 4 days late according to this app. I haven’t started for this month. I’ve been very bloated and tired lately. Never seem to get enough sleep. I’ve been having lower back pain and cramping, but it’s not been constant and I’ve been having some breast pain but, that’s not constant either it’s coming around every now and then for a split second. My stomach has been having this random tickle feeling around my belly button, and my stomach just feels weird in general. Im not sure that I’m pregnant, but is there a chance I am? Because, I’ve been having unprotected sex. He’s pulled out and sometimes he’s ejaculated inside me. I’m not avoiding pregnancy, we just said if it happens it happens, but I just don’t want to get my hopes up. Has anyone else felt like this?