Dear Denise,
Not only is it OK, I really do think it is necessary.
Who can endure daily pain and disabilities of all sorts and always be positive.
I know personally, I have to force myself to be positive or would be in a black mood all the time. Being positive all the time, in light of what we all endure is a very heavy load to carry.

When I am really low, I give myself a day, or two, where I completely unplug from the world, never get out of my pj's and robe, don't answer the phone, don't get the mail, eat whatever I want, and take as many meds as I need to feel more comfortable. I get my IPAD and watch Netflix movies all day and allow myself to just feel shi$$y. My cats always seem to catch on and join me in bed.

You had a lousy time of it lately and deserve some self pity days and are
definitely not alone in how you are feeling.
You also exhibit a lot of courage to say so because I have a feeling many people here feel the same way.

Here's to better days Denise,
Diandra