Penile Amputation and Recovery

I believe I suffered an extreme form of malignant psychosis which occured as a result of excessive smoking of synthetic cannabis and Marujuana. I always felt the urge to harm myself in a very specific way but the urges came very suddenly and expectedly. It was a severe self harm. Very painful experience which lasted over 20 mins. I managed to get my self to the hospital by myself where I was given pain killer and antibiotics for the wound to be stiched up. It took approximately 3 weeks for the wound to heal. I don't really know what triggered my psychosis but the doctors believe it may been from a build of a depressive mental state as a result of low or inexistent sexual desire disorder and erectile dysfunction. A few months on those thoughts are gone and slightly relieved. Any thoughts on my experience and any further suggestion on recovery mechanisms or how to regain and enjoy some form of sex again?