how was this show received from the critics?
It received mostly positive reviews from critics.
Per Manum
"Per Manum" received mostly positive reviews from critics. 
when does doggett find out scully is pregnant UNANSWERABLE what is per manum? It is the thirteenth episode of the eighth season of the American science fiction television series "The X-Files" who directed it? Kim Manners who are the characters in the show? FBI special agents Dana Scully and her new partner John Doggett along with Fox Mulder which actor plays the first character mentioned above? Gillian Anderson which actor plays the second character that you mentioned? Robert Patrick and which actor plays the third character? David Duchovny who wrote the story of that episode? Frank Spotnitz tell me in a short sentence what that story is all about. FBI special agents Dana Scully, her new partner John Doggett—following the alien abduction of her former partner, Fox Mulder (David Duchovny)—who work on cases linked to the paranormal, called X-Files.
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Per Manum [SEP] Broadcast and reception
"Per Manum" received mostly positive reviews from critics. Emily VanDerWerff of "The A.V. Club" awarded the episode a "B+" and called it "good". She appreciated the fact that the show revealed that Mulder was possibly the father of Scully's child, saying that it "ups the stakes in a lot of ways and redefines [Scully's] mission" to find Mulder. Despite this, VanDerWerff noted that the episode "has some issues", largely due to the convoluted nature of the mythology at this point in the show's run, as well as the fact that Duchovny looked "a little bored" at times. However, she wrote that the episode, along with the subsequent episode "This is Not Happening" was a showcase for Anderson's acting ability, and her performance "knits all of this together".