6 sentences Could you check my post? Many thanks for your help in advance

I hope you are feeling well!
Unfortunately, I caught a cold and had a slight temperature today which I reduced with paracetamol.
The weather is so changeable here. One minute it's sunny, the next cold!
When I had a medical check up a fortnighttwo weeks ago (or a fortnight ago, but this is not used regularly in North America), I was told what i knew time a long I have known for a long time:I suffer from chronic tonsillitis.
You now(? I don't know if you are trying to say "you know" or to indicate the time element: now) I almost always suck special medical lollipopslozenges (lollipops are children's candy on a stick) and again now I have a cavity in my teethtooth (or cavities (plural) in my teeth (Plural)) and I am goingmust go to the dentist. Here dentist dental treatment costcosts an arm and a leg(dental treatment is acting like a singular subject and requires the singular form of the verb: it costs for example). I can blame only meonly blame myself. I should not eat lots of sweet stuff.
I clean my teeth twice twice a day with an e-brush and an aqua jet ( a special device which cleans? with a strong water jet of water).

6 sentences. Could you check my post? Many thanks for your help in advance

I hope you are feeling well!
Unfortunately, I caught a cold and had a slight temperature today which I reduced with paracetamol.
The weather is so changeable here, one minute sunny next cold!
When I had a medical check up a fortnight ago I was told what I've known for knew time a long, 
I suffer from chronic tonsillitis.
You know, I almost always frequently suck special medical lollipops and again I have a cavity in my teeth and I am going to the dentist. Here dentist treatment costs an arm and a leg. I've only got myself to  can blame, only me I should not eat lots so many sweet things stuff.
I clean my teeth twice twice a day with an e-brush and aqua jet (a special device which with has a strong water jet )