I am so sorry for your loss. I lost my son Jackson at 20 weeks of pregnancy; I do not think your depression was overreacting, I am so sorry people made you feel that way!
People don't know how to respond; they say and do dumb things. I hate that, b/c it makes it worse
As for trying again, there is another board on webmd called TTCAL (trying to conceive after loss) and it is made up of women like us who have had one or more losses and are currently trying to get pregnant. They have a lot of advice, lots of knowlege.
The best advice I have is try Ovulation Predictor Kits and use them for a few cycles to see when you ovulate. I bought a pack of 50 for $10 off Amazon. The kind I bought are super cheap (work great though!), so you pee in a cup & dip the strip for a few seconds and read the results within 5 minutes. You do that every day starting on about day 10 or so of your cycle (day 1 being the first day of your period), and when your body has a surge of a certian chemical about a day BEFORE you ovulate, the strip will show it b/c the two lines on the test strip will match in color (up to that day, the test line will be lighter or barely visible). This shows you when you are about to release an egg (ovulate) so you know that the following 2-3 days are the ones in which you could get pregnant.
There are easier OPKs out there, I just get the kind you have to dip b/c they are so so so much cheaper.
If you cannot afford to go to the doctor, I would suggest doing that at least 2 months and write down the results on a calendar. This can help you see if you are ovulating each month, and if your cycle is regular. The info could also be helpful for when you do go to the GYN again.
(((hugs))) Again, I am so sorry for your loss.
I hope to see you on the other board, this one can be really slow but the other one has people on it every day.