Same story different month

Today I had my follicle scan. I knew when they scheduled my appointment for today it wasn't going to work. If I know one thing it's my body. However, due the the holidays and the clinic's schedule I had to come in today to have any hope of an IUI this cycle. She found that I only have 1 dominate follicle on my left at it's only 1cm. It has to be at least 1.8cm in order to trigger and do the IUI. We initially discussed having me come back tomorrow and see how much they have grown. However after having time to think about it I would rather just do timed intercourse and have a day 21 progesterone drawn to see if I ovulated. I'm so frustrated at this point! I'm tired of going through all this and putting not only my self, but my husband through it. I want to know why I can't conceive and why I have stopped ovulating on my own. If I am honest with myself I know that I have stopped ovulating because of my weight. However I can't find the motivation to do the extreme diet and exercise I have to do in order to lose weight. Unfortunately, I made the mistake of venting about all this to my co-worker. She used to be really supportive of me. She went through "sub fertility" 20 years ago and was pregnant 7 times before she was able to have her 2 children. However, recently she keeps telling me that it isn't going to work because I'm too worked up and stressed about it. Honestly, I don't feel like I'm stressed about it really. Yeah sure I keep track of what day I'm on, but I don't obsess about it the way that I used to. Yes I do opk's and, until the dog at my thermometer, was doing my bbt daily, but I don't really see that as stressing over it. Her advise to me this morning was to have a couple of drinks and relax over Thanksgiving. First of all, that wasn't helpful and kind of hurt actually. Secondly, I can't drink anymore. I used to be able to have a couple of drinks occasionally, but now even just one drink will trigger a migraine for me. When I pointed that out she rolled her eyes at me and told me that I just need to chill out. Are you kidding me?!? I know that she feel positive that I will have two children, but still. I'm so tired of people telling me to chill out about this! I just want to cry, but unfortunately I'm stuck at work for another 6 hours. I feel like such a fat failure today. When I look in the mirror all I see is an obese failure of a woman. I wish I had the ability to take a mental health day from work, but we do get Thursday and Friday off so that will be a nice break.