Looking on the internet deeply has found these results:

past couple of days is the most popular phrase on the web.

a past couple of days 1164,000 results on the web	past couple of days 1670,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	What about the past couple of days? She's been weird the past couple of days. I think that it would also fit in well with the plans which have been presented over the past couple of days on good government in Europe, as company policy forms part of this. It is a good sign that the rebel leader was arrested yesterday and that more than 200 UN peacekeeping troops were released over the past couple of days. I really appreciate you helping me out these past couple of days. Honestly? After taking care of Piper Grace for the past couple of days, I actually kind of get it. along, get I've put up with your Martial Law for the past couple of days 'cause I can do go

a past couple of days

1164,000 results on the web

past couple of days

1670,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

What about the past couple of days?
She's been weird the past couple of days.
I think that it would also fit in well with the plans which have been presented over the past couple of days on good government in Europe, as company policy forms part of this.
It is a good sign that the rebel leader was arrested yesterday and that more than 200 UN peacekeeping troops were released over the past couple of days.
I really appreciate you helping me out these past couple of days.
Honestly? After taking care of Piper Grace for the past couple of days, I actually kind of get it.
along, get
I've put up with your Martial Law for the past couple of days 'cause I can do go