Deadlift

I wanted to deadlift today because my calves are sore from running the other day and I haven't done it since before I was pregnant. My pre-pregnancy deadlift was 125#. Today I did DL 7x1: 45, 55, 65, 75, 85, 95, 105, 115, 125! and I tried 135 2x but failed each time. I got the bar up but did not do a full extention at the top. I could feel it in my back and I started to get scared. Feeling great about getting my old PR though.