new to group

Had our FET on Aug 16. Had our first blood test 9 days later and results said we are pregnant. Had another blood test 2 days after that (13 days after FET) numbers had increased again on blood test which we are told is another great sign. Now I'm to keep going with all my meds until our ultrasound appointment on the 16th. Feels like forever away. Can I do a pee stick test? Or should I wait till ultrasound?