Severe gas pains in the evenings...

I made a post a while ago (titled "Sick with no diagnosis... parasites?") detailing my symptoms, but I've been mysteriously sick for 6 months now. I started feeling a lot better for a couple of weeks, but the last three days I've felt worse. Also, for the past three days, I've been getting crippling gas pains that are so bad I can barely move every evening. It was so bad the night before last I threw up.

I was taking Paratrex but I felt like it was making me constipated so I stopped taking that for a few days... could that have made me sick again? I've been taking it for about two weeks.

I just don't know what to make of all these symptoms. I thought I was doing better but now I'm not. I feel like it's either parasites, mold exposure, or candida but I don't know.