Any advice regarding miscarriage / chemical? Feeling so low 💔

I know there's a high chance for little to no response but here it goes.

So i have a healthy 8 yr old and was on the pill for about 7yrs or so till we decided to try again. Came off the pill end of Jan last yr and had only 2 cycles (April / July).

Next cycle was Jan and got a positive test Feb 13th. I got so many positives on so many brands but it didn't get any darker. Went in for bloods ans they said it was negative. So i left it alone for a week or so and tested again and saw that the line was a lot darker. So i went back and did bloods but started bleeding soon after. I was told i was having a miscarriage. To say i was devastated would be an understatement. Anyway they checked again and made sure my hcg was dropped to normal. And i was told i could ttc right away as it was so early.

So we tried again and i got a positive test just last week but it was faint so naturally i worried and tried a few brands. Positive on every single test. And the line was progressing until couple days ago. That day i woke up feeling less "heavy" in my lower abdomen so i thought something was off. And since then the heavy feeling has pretty much disappeared along with the few symptoms i had. I did my bloods yesterday and today thry rang me to let me know it's another early loss, a chemical it seems. I was told i should be bleeding soon and it's just eating me up inside.

I'm otherwise healthy and have no health issues at all. I'm trying to find the root of this problem but my gp is not being much of a help. Been waiting for a scan since February but no luck so far. They won't refer me to gynae yet either. We both did our bloods recently and my husband was prescribed folic acid. My mind is going in circles just wondering what is causing this and what i can do at this stage to make it better next time.

If anyone could offer some advice or share some info I'd be very grateful.

Thank you xxx