I'm sorry you are having these troubles, it can be very worrying, and to somebody like yourself with an anxiety condition doubly so. With anxiety I've found I tend to look on the worse side of things, and that just about always is not true. I would imagine if you functioned before, you will again.
I was unable to be intimate at one stage, this was simply due to depression and an anxiety condition, however I improved as these were taken under control.
Trying to find out what is going on - and trying to fix it - by yourself does not sound that good an idea. Anxiety by itself can cause dysfunction, and anti-depressants can too. Plus the effects of going off meds all at once is unpredictable and maybe even harmful.
May I suggest you go see your doctor and explain exactly what has been happening? That way you will get a professional opinion and if medication is prescribed you will know it is appropriate. I'd do that straight away before experimenting further with your medication.
If I understand you correctly you are trying a non-prescription drug, which is a recipe for disaster. My apologies if I have misunderstood.Their content, purity and strength are all unknowns, as are their effects.
Please feel you can talk here anytime, you will be welcome