When I was really bad when oestrogen started surging I was prescribed beta blockers when a hospital doc and a GP couldn't get my heart rate down, after having done an ecg to know my heart was ok. The hospital doc was initially confused as they assumed I was panicking but after talking to me and seeing how calm I was they said it was purely physical and that a beta blocker would lower adrenaline, whereas the Diazepam I'd been given (which made me worse) was better for neurosis. I don't take anymore but it did the trick in calming the surging (you could actually see the waves swirling up my body which frightened the ultrasound nurse... but that's another story!) and it didn't lower my already low bp too much.
If you go to a GP for anxiety, worry, OCD etc. there's a 6-9 month waiting list for talking therapies so they tend to prescribe ADs if the patient wishes to try them. As CLKD knows, they can be just what someone needs also. Seeking help for any level of anxiety should be done when it's affecting your day to day life but most people would do well to learn how your thoughts affect your feelings and behaviours, I personally think it should be taught at school and then no one would over worry! If you think about it over worrying is stating untrue facts, so essentially lying to yourself, so why would you do that? Over-preparation is pointless as if something went wrong you'd then have the facts and would deal with it more smoothly because you hadn't wrung yourself dry with the earlier worst case scenarios.
When my clients say ‘what if, this and what if that?!!' I say ‘what if you win the lottery?!!'. Anything could happen, good or bad, just get on with your life, still be responsible but deal with what you need to at the time you have the facts.
Letmein - I've never studied mindfulness for myself or my practice and am not clear if it's distraction or, if its rational indulging in the fear, then that would be similar to Rational Emotive Behavioural Therapy (REBT) which I practice and is very simple and would not allow for over thinking as you are so focused on the rational sentences you repeat to yourself. Windy Dryden has a great work book on it where you become your own therapist.
Next time your mind is running off with itself, write down what your thoughts are, what's the worst thing about what you're fearing, what's that one thing that if you could take that away things would be ok? That will give you the magic clue to your underlying belief(s) that are causing you to feel so out of control.
Good luck!