Hi Sally 
You sound pretty much exactly like I did a few months ago. I have always been a worrier, but over the last couple of years my anxiety had gotten worse and worse, so that by the end of last year it was like a free-floating, pretty much constant feeling of anxiety and panic. It was horrible
.
I was very, very reluctant to tell anybody, mostly because I felt that if anybody knew how I was feeling, their reaction would be that I need to pull myself together - I have a good life, nice home, lovely husband & children, etc, etc. In short, I never really knew why my anxiety started ramping up when it did, which made it worse because I wondered if I was just going mad.
Anyway, in April I finally confided in a friend and completely broke down in a heap whilst telling her - I'd bottled it up for so long. And she pretty much frog-marched me to the GP that day.
And I am so, so glad I went. He wasn't surprised or confused at all about why I was feeling the way I was. He explained that anxiety (or Generalised Anxiety Disorder, as he diagnosed it), is an illness like any other - ie it is not under your control whether you develop it or not, and it can quite often just be caused by problems with hormone levels, or chemicals in the brain (serotonin) being out of kilter for a million different reasons. He said if you had problem with your leg you would get it fixed, and it should be the same with your mind.
He prescribed me a low dose of Sertraline, which is an anti-depressant but is also very effective for anxiety. And now approx. 3 months on, I feel so much better
. I still have the odd wobbly day, but that is all it is, and I can honestly say I'm feeling like my old self 95% of the time.
It's not an instant cure; the first few weeks were very up and down for me, and the initial side-effects can be a bit crappy too. But overall for me this has been a really positive experience. We have a thread in this Section - 'Sertraline Buddies - support for anybody taking sertraline' which I use a lot and have found really helpful so you may like to take a look - it's been going for a few months now so it's lovely to see the posts from people who started off feeling like you do and then come back to say how much better they are feeling
.
Do you think you could face making an appointment with your GP? You really do not have to live with feeling like you do any longer - the help is out there 