Parasites and PH

Hi, I have Pinworms...which means I've also got some questions about them. I've known of them for about two months, only been trying to kill them for about one.

Anyway to treat them the doctor perscribed me two tablets of 100mg of mebendazole. The first dose I took calmed them down,but gave me mild side affects. During the second week the itching was coming back...and it came back with a VENGEANCE. It had never been that bad before. Then I took the second dose, hoping for some extra relief. What I got was extreme side effects. Nuasea, and severe abdominal pain. One night I woke up around 2:45AM and it felt like my anus was pulsating and i felt like something was crawling out. I was irritated to find that the mebendazole didn't work...and my test came back negative. I don't put much faith in modern medicine, but I would've probably believed it was something else if I hadn't seen two of the creatures floating around in the toilet beforehand.

Now, I've been searching the web and instead of medicine I've been putting garlic powder in my water and drinking it. I've also put vasoline around the anal and vaginal ares. I put garlic powder around the anal area. I've also bought some pinapples too, but I haven't got around to eating those. The garlic and vasoline have been working REALLY WELL, but I have a few problems here too...

With all the garlic being ingested, the pH levels in my body are very off, and I'm getting nausea on and off throughout the day, some waves are better than others. I'm also getting muscle spasms along with it...which I read is supposed to happen. All of this just started four days ago, when I began this new type of treatment. The worms also seem to take temporary shelter higher up in my rectum, where they bite a bit more. It's near my tailbone area and I get a bit of satisfaction knowing I've got them on the run, but since they're that high up I can't get them with anything. They do come back down, but I don't like them in this little hiding spot.

So...these are my questions...should I lessen my alkaline intake? I'm worried that if I do they'll evolve and be able to handle the garlic, like they did with the mebendazole. If I don't stop it then I might get alkilosis.
Next, how do I get them out of this new hiding spot? I know an enema would probably work, but it's the same reason I didn't try douching my vagina. I don't want to clean all the good stuff out and leave some bad stuff behind.

Thanks for reading.