Advice on TTC

I am 34 and after a dysplasia issue my husband and I have started trying again. I was married once before and never got pregnant but my late husband had no sperm. Add to that my hometown OBGYN told me I could not conceive due to endometriosis. Fast forward 9 years, I move to a bigger city, meet a different guy and a have a new OBGYN who tells me yes you can it’s just harder.

So we decided to try, but than had that scare, Now after surgery and the clear to try again we are. I have cut back on caffeine, due to my age and that I read you should, which is torture. I don’t drink soda/pop, but I love coffee, so I am curious, does that actually work? I am considered overweight but the OB said that in itself wouldn’t stop me.