Hcg 309

I'm 5 weeks, I've taken 5 positive tests at home, all of which the lines haven't gotten any darker. I went for my blood work at my hcg levels are 309. Is this normal for this stage? They want me to go again tomorrow to make sure they rise because of my history. (Previous ectopic and miscarriage). But I won't get my results until Monday. This is going to be the longest weekend of my life!! Anyone have any input?