Has your husband had any tests? its not always the woman you know!!!
To be on the safe side, he should take some general multivits and cut out/down on alcohol and smoking, just to be sure. It takes 100 days for sperm production to improve so you do have to be patient.
Acupuncture is an excellent step- even if it doesnt help with conceiving, it makes you feel so relaxed and that can only be a good thing. It might be worth trying to time one months treatment in with your cycle- one treatment when your period is heavy (there is a certain treatment that can be done at this time that helps your womb to clear itself), one treatment at ovulation and one treatment around the time of implantation to help your womb accept an egg. Speak to your acupuncturist about this- my acupuncturist planned a month of this treatement for me and I got pregnant. May be coincidence but who knows?
Also, take a look at Zita Wests 'how to get pregnant'- excellent book, very positive and totally sensible.
Have you also heard of the Deanna plan? Its a plan of when to have sex for couples with no fertility problems. Basically it is just sex as often as possible to cover all bases to make sure sperm meets egg!! The Deanna plan says to have sex every other day from day 8, start OPKs on day 10, sex every day for 3 days from positive OPK then skip a day then one more shag for luck, then rest. Apparently it has a good success rate but I just think that lots of sex will do that!! lots of sex is also good for sperm health- the month we had sex every day I conceived.
Also, make sure you are doing enough to increase your fertile secretions (EWCM)- dont smoke, dont take antihistamines, 2 litres of water a day, starflower oil capsules (1 a day) and eat oatmeal in the morning.
Good supplements to take are vitamin e (natures secret fertility ingredient), a good multivit and obvipously vit b6, which you already take, for lengthening LP.
Dont worry about legs in air after sex but dont get up for half an hour after sex.
And i know lots of people say relax, and I wont say that but I will say- There is no reason for it not to happen and when you accept what will be will be, you usually find it happens. As long as you are doing all you can what more can you do?
Also, do not worry too much about your age. Its good that you are taking steps to get help, but time is on your side really. 35 is not old in ttc terms.
hope this helps