Am I too old?

So I turned 30 in May and I had my son in July 2015 (loved being pregnant and adore being a mum. Anyways fast forward a bit and sadly had a miscarriage March of 2017 very early which destroyed me when I found out I’m so afraid that I’m Never going to have my rainbow baby I am just Stress out because I don’t know if my weight & medication (methadone) play a part…since I’m 190 lbs and the medication doesn’t give me a regular periods. If I work on losing 50lbs and get down on my medication that will probably take me til I’m 32. Just curious if you think i should give up.

My best friend has 4 kids and she’s so blessed, I can’t help but to feel a little envious. Any tricks like

Take prenatal vitamins? Or should I focus on myself

Weight loss/anxiety before? I have no one to give me support on this subject so if anyone has anything to say I thank you so much in advance but /// am I getting too old?