It's been awhile because I haven't had any success in trying to conceive (TTC)... It'll be 8 months on July 3rd. I have…

It's been awhile because I haven't had any success in trying to conceive (TTC)... It'll be 8 months on July 3rd. I have had two miscarriages in the past around September-August of 2012. It took me till sometime in November, 2013, I believe the end, to conceive my Son and to have a successful pregnancy. Even though, I had a scheduled C-section at 39w, 1 Day because I had Gestational Diabetes. My Son was 11lbs, 6oz. Perfectly healthy baby, but, 6 weeks after he was born, I had the mirenna IUD placed in so, around September 29th, 2014. I had the mirenna IUD taken out November 3rd, of 2015, so a little over a year. I called my OB/GYN to schedule a annual but she said I am not scheduled for one until November something. She was a total bitch about it, I am just scared I can't have anymore children. I have tried conceiving apps and everything, I don't believe we have ever had sex on the days I have ovulated, either the day before or every other day since my fertile window until my ovulation day because, I read if you have sex before you ovulate, you're more than likely to have a girl. If you have sex the day of ovulation or after, you're more than likely to have a boy. I don't care what l have as long as he or she is healthy but, I do already have a Son who will be two August 18th, so it'd be awesome if I had a little girl. I am also labeled as obese even though I don't look like it, I weigh between 194-196 and I am 22, my height is 5'3" or 5'2 3/4. I do know that when J got pregnant with Bentley I was dieting and exercising but, I'm not sure if that has anything to do with me getting pregnant with him, and I've just been too depressed lately because every month I get a negative test... What do you guys think?