It is possible that you are depressed. Are there other things in your life that are distracting you or making you anxious or
sadDepression? If so, losing your
sexualCauses of sexual dysfunction
Erection problems
Female sexual dysfunction
Sexual problems overview energy and interest would not be uncommon. Also, are you taking any anti depression medicines? Or any medicine? There are some compounds that depress sexual interest and ability. It is also possible, that when you lost your erection the first time ( a common occurance ) you got upset and worried that it would happen again. Sometimes worrying about something makes it more likely to happen-- and then it starts to happen involuntarily. If this is the cause, I would suggest that you just relax, fondle each other, and don't attempt intercourse for awhile, When you get an erection just enjoy it and don't try to have an ejaculation. Get used to having an erection again and after awhile it should naturally be arousing and insistent enough to have regular intercourse again. The likliest explanation is that you do have a mental block- and so you have to relax and not put any performance demands on yourself to inhibit yourself. The tough part about these situations is that the worse you feel, the worse you perform. You have to relax, figure it's temporary and mental, and just enjoy touching, kissing etc for awhile. Loss or erections in young men like yourself is almost always emotionally caused, a habit that starts to form that can be changed by getting out of the cycle of worry, anxiety, and self consciousness.
If you can't seem to figure this out and your erections don't come back naturally after a month or , then you might want to see a physician and see if there is any systemic problem that needs to be addressed. I doubt it as physical causes, but you can't rule anything out. Most probably, however, this is psychological. Consult a therapist if you don't think you can change your mind set by yourself. I do think its possible however just to relax, enjoy being sensual, pleasure your girlfriend, and not push yourself to try intercourse or masturbation until it seems easy and unfrightening. When you do get erections you can touch yourself, enjoy sexual imagery, but not try to have an orgasm.Give it a little time, at least a month, before you go and seek any professional help.