PLEASE READ I NEED SOME HELP!!!!

Today I went to my regular doctors office for a preg test because mine at home were inconclusive. They gave me a test just like one of 3 I've taken. It was negative. The doctor asked me a series of questions, listened to my belly, touched around on it, and ordered a blood test. The nurses tried 5 times and weren't able to draw blood. Now I have to go back at 8am. I am so out of sorts. I am 37 and never been pregnant and not used contraceptives since I was 18. I am really nervous. my last normal period was 5 months ago. I have gained 30 lbs. I was @40 extra lbs but I've lost 10 b/c my people around me keep telling me I am pregnant. All the normal symptoms are the same as other moms2be. Except I have a very mild 2-3 day spotting each month.

I am feeling beat here. Does any of this make sense to anyone? PLEASE HELP!