I have been doing strong lifts for about 8 weeks with a trainer and now I am doing the work outs on my own. This going to sound silly, but when I do my dead lifts how do I load the bar?

I got up to 145lbs on my dead lifts, but I have had help loading the bar and putting it on the ground by my trainer. I tried to load 135lbs with the bar on the part of the squat rack then place the bar on the ground and load the rest of the plates. I did it, but I think I pulled something doing it last night:-/

Here is the thing... I am short, like under 5 foot. So lifting the bar and inch or 2 to get it off the rack and then place it on the ground is extremely difficult.

Any tips are welcome.

Thanks!