2 STDs at 20

Is it bad that I'm 20 and I've had two STDs... I've had chlamydia when I was 17, it was the first time I got tested and I don't know who I got it from. Recently I was diagnosed with genital herpes... I got that because my (now) ex cheated on me... I know I got it from him because I got tested right before we were having sex. I was clean. After we broke up I got tested and now I have genital herpes... just had my first breakout. I keep trying not to feel horrible about myself because of it, but I feel like I'm nasty... and I know if I'm ever going to have a sexual relationship with anyone again I have to tell them I have it and I'm afraid of what they'll think or say..