I think it could very possibly be the pill.
It zapped my sex drive to ZERO, which is unusual for me. I didn't even want to be touched in a nonsexual way, I just wanted no contact at all. Off the pill, I'm normal.
Can you use a non hormone type of birth control?
sometimes we just forget what we have until we loss it,we take it for granted that it will always be there,every relationshp goes through rough patches and only you and your boyfriend can work thngs out,you both need to make more time for yourselves and each other,i know you both have work commitments,but when you do have the spare time you need to spend a bit of it together,make a meal sit down together,reaqante yourselfs talk laugh,the sexual desire is probaly gone down hill through tiredness and stress,money isnt everything,having someone too share your life with is much more fun,i wish you luck.