BFP after chemical pregnancy - really scared of another

Hi all,

So I have got a BFP (well 9!) in this week leading up to AF. Due on today but first tested and got a BFP on Monday. Turned into a POAS animal since then and tested 8 more times and all BFP. I should be happy but last month I got a faint BFP day AF was due, BFN the following day and then bled heavily for 5 days after that (from all I've read I have assumed this was a chemical pregnancy).

I am just so scared of it happening again. Anyone else had similar experiences and gone on to have a successful pregnancy?