Yes it is because you are jumping up and down Vicky, it will settle and how long that will take really depends and varies. For me when I went down as my doctor advised, it took a day or two and I felt much better. However as you’ve increased quickly a few times and now down again, you may have to wait a few weeks or longer. All the same advice already given applies, remind yourself it will pass, do other things mentioned here and many times privately to help the anxiety and perhaps if able take a few days off work to do things you enjoy to take your mind off it.