I'm 22 years old and have been going through a stressful time over the past year, family passed away and I was left to care for my younger sister, I am out of work because of this and consequently it is leaving me with nothing to do but look at four walls every day. I then, just after this happened, met my now girlfriend whom I care for very dearly, the problem is that no matter how hard I try I cannot seem to make her reach orgasm, she says that she doesn't mind and that just the sex with me, for her is enough, and to be quite honest it's wearing me down to the point where I feel inadequate for her, sometimes I feel like she should be with someone who could make her achieve something that I can't seem to give her.

This, I believe has led to more sexual problems both physical and mental, I get paranoid about her being with other people sexually, thinking the worst things about someone who I normally would trust everything to, and I find that now I can't seem to hold an erection for the course of sex and, whats more find it hard to orgasm myself, through masturbation and sex my erections are not as hard as they used to be and I feel like I am nothing but a disappointment to her. I suppose I sound like a complete mental wreck of a person but I think that I can't get out of this rut unless I seek help, maybe someone could possibly point me in the right direction? PLZ HELP