I feel like I'm turning into a hypochondriac

Lately I've been feeling there's something new wrong with me every day. I know what I've been feeling can be explained be different things. 1. I'm just coming off of the depo shot. I only got it one time and I figured since I'm not in a relationship right now and it really made me emotional, that when it came time for the next shot last month I just opted not to do it. 2. I'm under a lot of stress at work and at home. And there's no way to alleviate the stress, so I just have to figure a way to deal with it. 3. My birthday is coming up and I really thought my life would be so different at this point. Knowing my life isn't where or nowhere near where I wanted it has made me feel so depressed. And I don't really have anyone to talk to about it. So I've been feeling so bad emotionally that I think it's affecting my physical health.