What Causes Anxiety And Light Headedness?

I am a 33 year old female I weigh 139 and I'm 5'3 i had a baby 3 months ago. Was completely healthy while pregnant and no blood pressure issues at all. Over the past several weeks I have been really worried about my health and it has stressed me out badly. Started taking zoloft 25 mg for anxiety at night. Last week I had blood work done because I have been getting light headed and very tired. My blood counts were good and no thyroid issue, sugar and iron were fine. They found a trace of protein and blood in urine and chalked it up to a UTI. Also had elevated liver enzymes of Alt was 98 and ast was 51. Cholesterol was 262 with LDL being 179, hdl being 74, and triglycerides being 54. My blood pressure at the doctors office was 124/90 while sitting, 117/79 while laying down and 177/81 while standing. I was very nervous an attributed that to the readings. Since then, I have been so worried about the elevated enzymes that it has caused me to stress. The other liver function test they did was normal and i didn't test positive for hepitits. Today my blood pressure was 134/100 and 2 minutes later it was 117/76. I'm afraid my cuff may be going bad or something because how could it go down so fast?? I'm super worried.