Scared to death been ttc for 2 years

Teresa • Been TTC for 3 years with the 7 Angel babies!!!
Okay well first off thank you for reading this !!!
​I went to my obgyn yesterday and has a talk with her about wight control since we have Ben trying for 2 years and no baby ..
​Well she ordered a ultrasound to see if there is a issue somewhere !
​and I am really nerveous !!!
​My hubby has been tested so we know its not him !super high Sperm count ! I have a beautiful 3 year old daughter that I have through my first marriage ! 
 I have pcos and my periods are very irregular. ( haven't had one since jan) 
​Well has anyone else gone through this ??? I really need some friends in this !! Thanks in advance for the help !