Charlie I agree that IPL will not do any damage, it's just light!
enlightened That's rubbish - any point in complaining about this? That really shouldn't have happened...
tiny Cheer up, I'm older than you
Hope you can enjoy your birthday more this year!
I've cut back caffeine to a maximum of 2 cups/day, one when I am in the 2ww. After I found that the Nespresso decaf actually tastes quite nice, it wasn't so hard after all.
I never drank much, but now it's even less, usually a couple of glasses at weekends - this was mainly due to watching the calories, but I just stuck with it. Wish DH would do the same!
I take folic acid (800mg/day), Royal Jelly, CoQ10 and Omega 3, all of which are supposedly good for egg quality... I'm staying away from anything that might influence my cycle, like agnus castus or DHEA, and won't try Chinese herbs (yet) - those are strong stuff, and personally, I want more scientific back-up for the more 'invasive' supplements.
And I force DH to take supplements and do exercise, too 
I will, however, take aspirin when I get a BFP (but this is to more to do with my history of DVT than to help sustain a pregnancy - although I'm happy to have that 'side effect'
).
Apart from that, I eat healthily and am trying to lose weight to get back into the healthy BMI range. Frequent exercise, but this again is more for my emotional wellbeing, as it just makes me feel better.