You are OK where you are!
Have your urine samples been sent to a Lab to see if you require antibiotic therapy? Vaginal atrophy - threads here to read, make notes

- mimics repeated urine infection-type symptoms really really well!
Ring your GP and ask for appropriate VA treatment: if 'vagifem' isn't helping as it's such a small amount of active ingredient, try 'ovestin' inside and out, the idea being to insert nightly for 2-3 weeks. To ease the need2P I take 'nurofen' regularly.
Sitting won't help if the area is sore. Don't stop using it, initially the product may sting!