I've had a tight feeling in my chest on and off for 2 weeks. Driving me mad and I'm worrying.

Feels like I'm wearing something that is too tight. Doc gave me stuff for heartburn. 

see your practice nurse and get a lung function test

Is that when you blow into that peak flow thingy?? X

Dear Donna - yes - and if you're over 40 you are eligible for a free NHS well person check that will cover full blood count too.