I live by the ‘everything happens for a reason’ philosophy but I cant get my head around this one

What baffles me is WHY! If everything happens for a reason, why was this coincidence happening, why did I find myself in a celebration environment at the exact time of egg transferral? What was the meaning behind it? The reason it was happening?

Was this about being prepared to give up things or was it about celebrating life and being light and happy and not not being too focussed on the IVF .. its got me, I cant find the right approach to it.