The cold damp weather is a problem for many asthmatics.
Also, if you only recently started using the steroid inhaler again, then you will need to give it up to five days to start building up before you see an effect.
Ventolin should work straight away though. It may be worth checking that all your inhalers are still in date as they may not be so effective if they are past expiry date. (I have had inhalers out of date, just because I don't always have to use them and it is not always obvious to check them). I believe that you can now buy asthma inhalers online, I will see if I can find a link. Otherwise, can't your GP write a prescription to be collected by your DH, DM or a friend?
If you have a bad cold, it may also help to use Beconase (available over the counter, Boots, Tesco etc.), it reduces the effect of post nasal drip which causes lots of coughing and can make you need to gasp for breath. In case of a cold, Sinutab, Sudafed and the like can also make a difference.
I very very much hope you don't have whooping cough, as it is still doing the rounds. If you have coughing attacks so bad that you need to vomit, you may want to see a GP to get antibiotics to reduce your infectiousness to others. Hopefully this is not necessary.
I hope you feel better soon and Joe's Vascath and stem cell harvest go as well as possible.
Thinking of you.
x