My lab work up is normal except for TSH of 6.75 which has gone up in the last few months. the veins in my arms are distended and torked and very obvious. When I lay down my head feels like it is very full, or pressure. I have a lump in my throat feeling on and off. Sometime I feel lightheaded and feel like will pass out but have not. Palpitations, tachycardia intermittent chest pain. sometimes wake up at night feeling like I can't breath. Echocardiagram is normal. I think I have panic attacks but I also think there is something physically going on and that is making me have them I think. The other night I was laying in bed on my side and had my hand under my ribs and so I could feel my heart beat really well and it just got weaker and weaker until I could hardly feel it and my head started to feel all light and cold. So I hurry and move and then it goes away. I also have started having tingly sensations on my head-like when your hand "falls asleep". I also raised my arms up and my vein in my neck got really distended.I was on Synthroid for a couple months but all this seemed to get worse so they took me off. Am I just anxious-I think its some Thorasic outlet syndrome or weird goiter thing or something more. They want to start me on Paxil that doesn't seem like the answer to everything nor the ambien to sleep better. I've been breastfeeding and trying to wean to get to the bottom of this. I have 4 kids my husbands in residency and thinks its just nerves. I've called the ambulance twice and gone to the ER once Please help me find some answers????