Hugs hon, it can be really hard in the first few weeks, especially if this is your first! Though my LO never really suffered from wind, I wouldn't worry about checking for it while your DD is napping, as this may disrupt her sleep (unintentionally of course!). She will let you know if she's in discomfort. When you go in to help her resettle, what prompts you? Is she crying (the sounds escalates in volume and pitch), or is she just fussing (lots of little noises, some occasional squawks, but no general distress). It can be really hard to stop and listen to the difference in the sounds LO's make but that is part of the BW, really getting to know your LO. It sounds like you try to give her 20 minutes to resettle, which is great, however if she's still just making noises and not crying, maybe try to give her a little more time to settle.
PU/PD is typically not effective with babies under 3 months of age, so you might want to try Shh-Pat, or Shh-Rub (my DS hated the pats, loves the back rub!). That also allows you to potentially leave her in the cot while still helping her settle.
Having said all that, 7 weeks is still very young. You might want to try wearing her in a sling or baby carrier to assist in longer naps. At this age, all accidental parenting can be undone once your LO is getting enough sleep. Try not to focus on set naps or rigid schedules, just go with the general order of EASY.
Getting started - how I survived the first 3 months