A little scared..

Hi ladies....I'm 43 and considering having a baby next year,after I get married. I didn't think i could get pregnant still,but I can. Long story. Don't want to get into details. I'm a little afraid of how my body will handle this. This would be my first baby,and truthfully, I never thought I would be a mom, because twice I've been told I couldn't. Both times the doctors were wrong...now that I know I can, I want one,but a little scared. Scared ,of my body can handle it. Will I be strong enough and healthy enough...just want everything to go ok,for the baby and myself. I'm getting off the pill,in Jan and will start trying then. Any advice,please on what I should start doing now? Thank you!❤