trying to conceive!

Hi Ladies, my husband and I have been together for 14 years and I had a miscarriage on September 30th 2014, I am overweight and have other health problems. I was also told some years ago that I have PCOS but I have had 2 pelvic Ultrasounds done in the past 2 years and was told that my ovaries are normal. I am really scared of going through another miscarriage again but I also feel I am running out of time because I am 35 years old. I have never really paid attention to my ovulation cycle because my cycles used to be veey irregular but after being on birth control for over 2 years my last 2 cycles were normal and I just had a positive ovulation test on the 21st of this month in hopes that we conceived our rainbow baby!! I feel really anxious and I'm trying my hardest to not get my hopes up. should I have waited to have another cycle or am I just over thinking everyhting?? Please Help!!