Looking on the internet deeply has found these results:

at your side is the most popular phrase on the web.

in your side 158,200 results on the web	at your side 131,300,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Lyrics. Thorn in your Side Some people look, some people stare, some people turn away. Stumbling over words as if their tongue was in the way. Some people ... Hey, just wanted to let you all know that in honor of Pride month my song "Thorn in Your Side" will be available as a free download! Click any of the links in this ... A thorn in your side is someone or something that causes trouble or makes life difficult for you. Category: Plants & Flowers; View examples in Google: Thorn in ... 5 days ago ... thorn in your side. ( also thorn in the side of someone). › someone or something that continually causes problems for you: Money problems ...	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

in your side

158,200 results on the web

at your side

131,300,000 results on the web

More popular!

Lyrics. Thorn in your Side Some people look, some people stare, some people turn away. Stumbling over words as if their tongue was in the way. Some people ...
Hey, just wanted to let you all know that in honor of Pride month my song "Thorn in Your Side" will be available as a free download! Click any of the links in this ...
A thorn in your side is someone or something that causes trouble or makes life difficult for you. Category: Plants & Flowers; View examples in Google: Thorn in ...
5 days ago ... thorn in your side. ( also thorn in the side of someone). › someone or something that continually causes problems for you: Money problems ...

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