I'm A 26 Caucasian Female Whom Is Extremely Stressed, Depressed,

I'm a 26 Caucasian female whom is extremely stressed, depressed, also I suffer from anxiety and panic attacks. Another important thing I want to mention was my thyroid count was low last time I was tested just 6 months ago. My concern right now is that I may have a clot traveling to my heart. I noticed this odd little bruise on the backside of my upper calf, it's also raised a little. The little bruise is located on my left leg from which I'm now experiencing a dull throbbing pain. Feels very much like my muscle twitching. Also, both calves are sore but I've been very active these last few days. My 1 year old had been pretty sick with vomiting diarrhea high fever decreased appetite also with a rash on her genital's that kind of spring up the day that she started vomiting the rush was the first of them I'm not I noticed besides her change in Attitude but what I'm worried or concerned about now is the fact that my feet and hands Got really swollen, hot, and felt like I was being stuck with pins and needles. I also felt the same intense sensation on the inner part of my knees and on the inside of my forearm butt on the inside of my knees I kind of had a small rash type that went away fairly quickly with Benadryl calamine lotion and rest but as for my feet in my hands they are still really tight and red and hot. I'm also having a bit of chest discomfort but I'm afraid that's because of my anxiety and the fear of dying that I have but I experienced a nude pain that shot right through the middle upper left side of my back straight through very sharp very painful I was getting up from a couch and I was unable to move for a minute or two and it hurt to breathe it was very different very intense I'm just trying to figure it out if this is serious or--if everything that I have grown with me is just making it seemed as if I am? I am a smoker at half a pack a day and do take birth control pills. I do have possible nerve damage and scoliosis runs in my family, my physician used to give me cortisoneinjection's in mt lower back, which explains the tingling numbness that my legs do suffer but this does feel a little bit different now I also am experiencing lack of concentration disorientation like most delusions over the last couple weeks my hands are extremely shaky and weak along with my legs that are weak as well. Is there anything at all that I can do to do or take to help now and to prevent?