Hi, I'm also a new member.
A lot of people have to work with their doctor over a few months to find the right medication and type of therapy to best help. The more specific information you can give the docs, the better.
When I'm in a really low period I sometimes find it helpful to give myself permission to just rest or watch TV or whatever for a day. Part of the deal I make with myself is that I will accomplish some small things tomorrow. For me, I find that by not fighting it I can end up feeling a lot better the next day.
If the low period stretches on for a number of days, though, I always check in with my doctor. Depending on what's going on I've often found I needed a bit of a tweak with my medications.
Take care and don't beat yourself up.
I have Depression and Fibromyalgia
My Mom has Bipolar II
My Niece has Bipolar I