woman with aggressive reproductive disorder; should i allow cheating...

[mama]

...boyfriend to be the father? ok before you guys jump the gun, please read- allow me to explain. i am 35 years old with an aggressive reproductive disorder that i was born with (fibroid/adenomyosis). ive lost all pregnancies, had treatments and major surgery, and at this point there is nothing more that can be done. my doctors are urging me to consider hysterectomy unless i try to get pregnant now (literally) due to my age and disorder. ive been with my boyfriend 7 yrs, i recently found out that he had been cheating on me. at this point, i don't really no if the relationship will last, but im really focused on trying to conceive before it is too late, and too late could mean as soon as months down the line. i always thought it was insane for people to have a child with somebody they just met, or say if they've only known each other less than a couple years. its an absolute Pandora's box in my opinion. and i don't want the industrial set-up of a sperm donor. he has children already and is a good father. im thinking if our relationship doesn't last, i have the rest of my life to meet the man of my dreams that will accept me and my child, but as for the father of my child, my time is running out, so i feel it would be best to have my child with him since he is already in the picture for some time now. do you agree or disagree and why?