Friend is jealous of pregnancy? Advice please!

Hello ladies! I am 25 years old, mother of a 5 year old girl and currently almost 9 weeks pregnant. I have a friend who constantly tells me how jealous she is that I'm pregnant. It's not in a joking playful way she is very serious. She has two children but before that had 2 miscarriages and recently suffered another miscarriage this past December. I try to be understanding because I too miscarried in August, it's a very hard thing to go thru. Every day that I talk to her I feel her constant judging. If I complain about morning sickness, she says something along the lines of "how dare you complain I would love to be in your shoes sick and all, you're ungrateful!" If I am having a good day and talk about my excitement she says "Wow must be sooo nice". She'll constantly ask me if I am still happy, or say that if she were me she would be WAY more excited than I am. Mind you, during her last pregnancy in which she lost the baby, she continued to drink multiple beers and a time, smoke weed and take xanax! What bothers me the most is, she is choosing NOT to have another baby until she finishes with school in 3 yrs which is understandable, but why make me feel so bad if she will have another? Am I over exaggerating the situation? I just don't know how to respond to her telling me that she is jealous. Any advice? Has anyone dealt with a jealous friend?