TTC after miscarriage

Hello, I’m looking for some advice. I came off the pill in July and fell pregnant after 2 cycles. Me and my OH were over the moon, with 6 BFP we couldn’t believe how fast it happened! I then start to have a small amount of brown discharge here and there at 4+5 weeks then on 5+2 days I had some bright red blood and tiny clots but again it was nothing compared to a period and the bright red blood was only spotting on and off for 2 days max! I went to the hospital who said it was most likely implantation bleeding as it was very light and I was experiencing no pain what so ever! They took a urine and blood test which both came back positive. The next day I received a call from the EPU to say there’s not much they can do and I was to wait a week then take another test. I couldn’t wait so I took 2 tests then next day 5 mins apart the first one was a very faint positive and 2nd one was a BFN, I waited until the next day and had 2 BFN again. I felt devastated and so did my partner, i went to see my dr who said yes I had probably had a natural MC! Anyway 3+3 weeks on and I feel pregnant again we have been BD every other day since MC, just took a test and it was a BFN again has anyone here MC with only spotting? And how long did it take yous to conceive after MC, any advice appreciated xx