You should see your doctor if you have concerns. They can check your horomone levels to ensure you are ovulating. They can also check an AMH level which indicates your egg reserve. They can also run additional imaging if they need to.
Hope this helps!
Hi Kasia, Just try your GP, they will help you all the way, if he/she cant they can send you were you need to go. just remember its the UK and its all free.
Good Luck