I'm sorry your friends have gone somewhat dark. It is what they do.
One theory, is that they simply do not know what to say. They are uncomfortable around you, but it is truly not because of you. It is due to their own fears.
Good, bad, right, or wrong.... Some believe it is "contagious." Some believe you may come after their H. Some pull back because they don't know who to believe, and are waiting until more truths are revealed. Some can not bear to see us hurting. Some are avoiding us because they think our M problems are all we want to discuss. Most, simply can not relate.
Similar to your chemistry parents.... Those who do not know chemistry, or that type of humor, will not be able to relate. It is not personal. It is simply not a shared experience that the friends can understand.
I have noticed throughout the different "phases" of my life, my relationships with friends have ebbed and flowed. When my kids were toddlers, some of my friends had not yet had kids. They couldn't relate until they had theirs. We were always friends, but spending time together wasn't always as natural as other times.
If you are comfortable bringing it up with friends, and set boundaries to have positive conversations and steer away from h topic, sometimes that's all that is needed.
My experience has been to communicate that I am choosing to "lay low" with my in-laws and some friends. That I still love them, however I feel it is best for a little while to allow the dust to settle. I am clear that there are no hard feelings on my end. I have found this relieves the pressure and deliberate avoidance from them after they know.
So, some really great people on he board once had me make a list.
I would like to see you do this, as well. Can you make a list of 20 good qualities about yourself that you DO know to be true? Anything.
They can be simple things.
For example, 1. I can cook 2. I have great hair 3. I'm a talented photographer