Should I ask my doc to increase dose?

Despite what you might think/feel, you are doing so well!  You are making it through each and every day, and that's all you need to be doing at this point.  2 weeks is still very early for sertraline.  it's going to take longer than that to feel better.  Hopefully you should get some relief soon.  I went back on 50mg in the fall, and it was at least 3 weeks before the side effects (including the all day anxiety started to decrease).  I took Lorazepam every day during that period, then I would have a day when I wouldn't need it, then two, then three.  Now I haven't taken any Lorazepam since October.  You will get there.  These are the early days, and unfortunately this med makes you feel worse before you feel better.  The initial decrease in mood and anxiety is because the medication temporarily limits your serotonin levels.  Your body stops producing it, and your body is also not ready to use all the extra serotonin being given my the medication.  Your body/brain take time to create and grow new receptors for the serotonin, and that procress takes weeks, which is why the medication takes so long to work.  I found that knowing this, made me feel better.  I knew I would get there and so will you, you just have to let the medication do it's thing.  Keep taking your benzos as you need.  It won't be forever! Hang in there, we are here for you!