Please help

Hey everyone so last Friday (12th November) I went to A&E with pains in my stomach / bending leaning forward ect would really hurt my stomach / chest and affected my breathing like it was really painful just walking! anyway long story short they made me do a urine test before I went home and confirmed by my bloods / pregnancy test that I am pregnant.. but they was a bit concerned that it may be a miscarriage as I said I can’t be I’ve just had a 9 day period ( bare in mind I’ve just had a baby just over 3 months ago so my periods are all over the place) anyway so they wanted me to come back for more tests on the Monday( 15th November) told me i would get the results back the following day but I ended up going back to a&e as I was still in absolute agony found out that my bloods were still high and my hcg so they wanted to do more tests over the next few days and they have said my hgc levels are still high and my bloods haven’t gone down over the space of 5 days I think he said my bloods were at 2,100 and something can’t remember exact but he has asked me to come in tomorrow to discuss getting an injection to dissolve the pregnancy !? 😩😩 as I’ve had 3 or 4 scans in a row and they can’t see anything on the scan they have said they don’t think it’s an ectopic pregnancy but I just don’t want to dissolve the pregnancy incase everything could or is still ok and possibly to early ? Or what if I have miscarried and it’s a new pregnancy? I’m just so confused / upset right now 😩 has anyone gone through this or similar? thank you