Hello ladies, I need help and all input would be great...

If you have been following me you'll know some of my journey.... But I need advice,.. I have had a rough start to my pregnancy and it hasn't got any better, from being told my hcg levels weren't going up enough and that I'd proberly wouldn't get past 8 weeks to being told I have a heamatoma that they cant see, to now... I have had that many ultrasounds, I have lost count and visited the hospital the same amount of times due to bleeding... Recently my bleeding has gotten worse and heavier and have gotten blood results back that I have low PAP A hormone which means my placenta is not working as it should and may restrict baby growth and that I'm very high risk of T21 and T18.. They have put me on aspirin to give the baby a chance with the placenta I have, and seems to be making bleeding worse and longer, I haven't had sex with my partner since I was 6 weeks pregnant he's understanding but I miss him so much.. 😕 And I haven't gone a day with out wearing a pad cause even the brown spotting is enough to have to wear a pad ... I can't go shopping or in the car or stand up for any amount of time as it sets the heavy red bleeding off ... I have refused further testing with needles as i don't want to risk miscarriage because it is a miracle im pregnant this far as have had 7 miscarrages and financial situation atm means I can't do the blood test... But they have bought my abnormalatiy scan forward to 17 weeks so they can see if there is anything wrong with baby ( so far at 12 weeks 3 days everything seems great and baby growing fine) if there is I will still have time to terminate if baby has T18 ( they say, not me) .. The down syndrome doesn't bother me as I would keep it if it had that.. Im scared and wanting some advice I'm 38 and also wanting to know am I putting myself at risk to try and keep this baby... The doctors don't seem to be any help and constantly leave them feeling more confused then I did when I got there.. What would you do?