Is this anxiety?!

I know people deal with so much and I’m not looking for anyone to feel sorry for me. Here lately I’ve been so up and down. Yesterday I was in a GREAT mood all day long but today I got depressed just out of the blue. I started crying in the shower and felt like my chest was tight and I couldn’t breathe. I rarely have days where I feel like I can just be myself. I rarely have days where every little thing doesn’t annoy me. I hate being like this. I’m using all kinds of ways to try to make me be more positive. I am so grateful for everything I have I just get the random spirits of sadness out of nowhere. Me and my boyfriend are fine. Schools going good. I’m just so confused. Should I mention it to my Obgyn?