Advice for Buddhist meditation for OCD So first I'd like to say I have permission from a therapist to ask this question, so this is not "asking for medical advice". 

So I have OCD. It affects me all the time, I feel this constant stress, discomfort. Thoughts and stressors bother me a lot, and tons of things cause this emotional pain. 

My therapist has suggested a long meditation is the way to do it. Sitting for several hours every day until it's dead. So this is what I'm doing and want to continue to do, but I'd like some help doing it more effectively.

So I've been studying Buddhism and meditation and very unsystematic way. I think I'm starting to understand alot of it now. But ultimatelly I dont fully understand what exactly I'm supposed to be doing/not doing in meditation. I've been doing some guided mediation on vedananupassana and so far I've been feeling better. But once again, I don't exactly know how to do it... Im supposed to look at the feelings but I dont know what im supposed to do?

If I wasnt so sick right now (fatigue, acid reflux) Id probably just study buddhism formally and just practice meditation until I start feeling better. But thats not feasible right now.

So what would your advice be for me to go about this? Are there any good online courses or something?

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

Thanks.
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.