Hlep. 50 Ohm PCB routing problem to dicuss

[zzm_3392]

Hi all,
I routed a 50 Ohm trace to antenna pin. But the pin is on the bottom layer, so i have to connect it through a via(12/25/37mil, drill hole/pad/power isolation diameter) and 10mil trace width. For more detail, please look at the picture.
The frequency is 2.4~2.5GHz. Because the space is too tight, the via is in pin pad and connected trace is 10mil width.
Is it Ok? Can anyone give some advice or other better method?
Thanks.

 

[scs-circuits]

i think it's ok!

 

[emamss]

regadless to the trace impedance the trace length is so small this mean this trace is short circuit not transmition line