Advice for Buddhist meditation for OCD
A lot of therapists out there are well-versed in both the mechanisms of OCD and mindfulness today, especially those working with methods like CBT, unified protocol, CFT or ACT. 

Regardless whether you get the help from a clinician, or someone knowledgeable in meditation practices, i recommend proceeding with the aid from someone guiding you through the mindfulness practice initially. Until you find your own way of applying mindfulness, it can be a lot to deal with on your own.


  Also an important note: Several times now, in the midst of all this stress and discomfort all over my whole body I suddenly get these pretty short lived moments of bliss. My body glows with comfort and bliss and then after a while kind of fades out. This has happened several times now and it's pretty interesting. This is what fascinates me. What do you think is causing this? My guess is I must be doing something in those moments correctly, letting go and not resisting the pain or something


Yeah, you've seem to have picked up on something important. It may be what's called sukha within buddhist meditation, a common emotion associated with the initial stages of meditation. Consider it a bread crumb trail for you to follow.