First time being pregnant and having complications

So I'm 26 years old and have been trying to get pregnant for a few years now. For awhile I was thinking I was unable to get pregnant and it was really starting to get to me cuz its something I've always wanted since I was a young little girl playing house everyday. I love kids and animals and I've always dreamed of being a stay at home mommy and get married and to have my own little family. I have some health problems so I'm on disability and can't work anyways so I will be able to spend all my time with my child. I've been with my fiance' for a little over a year now and I just found out 2 weeks ago that I'm pregnant. I missed my period so I took an at home pregnancy test and sure enough it was positive so just to be sure I took another test 4 days later. I was so happy and surprised that it had finally happened! So I was supposed to go to my first doctors appointment with my primary and I didn't make it to my appointment cuz I ended up in the ER with terrible cramps and bleeding very heavy bright red. So of course it scared me so I went to the hospital and they told me that I'm exactly 6 weeks now and that I have a subchorionic hemorrhage around my uterus which was what was causing all the bleeding, I had to get a special shot because I have O negative blood type, and they were concerned that the baby's heart rate is too low. Its only at 80 and is supposed to be between 120-160. So at this point they aren't sure if the baby is going to make it or if I'll end up having a miscarriage or not. On the plus side, I stopped bleeding completely, the cramps went away, I'm extremely bloated, my boobs are very sore and tender, and if I do end up losing the baby at least I now know for sure that I'm able to get pregnant and am more than likely gonna get pregnant pretty quickly when we will able able to try again when I'm allowed to have sex again in 6 weeks. And they said I'll more than likely have a healthy pregnancy. I didn't know it but the nurse at the hospital I went to told me that 50% of most women's first pregnancy is a miscarriage. I'm eating good, walking every day, drinking plenty of fluids, taking my prenantal vitamins everyday plus I drink breakfast essentials for the extra protein and vitamins. The doctor told me no sex for right now and to be at bed rest cuz I need to let my pelvic rest....not lifting anything heavy or anything like that. So I've been taking it easy. Im just trying to do everything right and everything possible to try not to lose this baby. The only thing I'm having a hard time with is the terrible mood swings I'm having and stressing and worrying bout everything too much which isn't healthy for the baby at all. And the mood swings are like extra bad cuz I have manic depressive disorder, extreme anxiety, bi-polar, and I have sleep insomnia which I've been on phych meds since I was a teenager....and have been off of them for 3 months now for the first time in years. I'm starting to think that's why I wasn't getting pregnant all these years becuz of all the meds I was taking. Because it seems like as soon as I stopped taking the pain meds And the phych meds...bam I got pregnant like instantly! Goes to show u how bad all those meds are for your body. Also, I think god has a plan for me and that's why he waited for the right timing for me to get pregnant. I'm finally stable and healthier than I've been sine I was little. I was diagnosed with Lyme disease when I was 10 yrs old and it caused multiple health problems like all my phych problems, arthritis, fibromyalgia, short-term memory loss and fatigue. But I get up and push myself everyday. With my good faith in the lord my life seems to be getting a little better day by day. One step at a time! I'd like to talk to other females that might have some things in common with me and if anyone has gone thru what I'm going thru now with pregnancy or are going thru it right now I'd like your advice or opinions for some closure and reassurance. I'm new to this app so I don't really know much bout it or how all this works yet lol. Thanks