anyone did IVF??

hey Ladies . Im starting My First Cycle Next Month & I Wanted to know about the process Step By Step. and what medicines do they give you if your periods are regular. i just want a clue i feel so nervous about everything and it would make me feel better if i had an idea of everything especially from someone whos been through everything. and also is it really necessary to have pgs testing especially if we already did genetic blooding testing and everything is fine..