help needed!!

last month i had implantation spotting/bleeding. i tested two days after the spotting and got my bfp. i started using this progesterone cream(the day after my bfp) but i read that if you don’t need it don’t use it. so i stopped using it. my lines were getting somewhat darker. 2 days go by and i started bleeding and having really bad cramps. so it was a chemical pregnancy. this month i’m pregnant again. i got my bfp jan 26th. i’ve been using the progesterone cream ever since i got my faint bfp. but i’m starting to run out and the cream is pretty expensive. my question is should i start taking vitamin b6 progesterone pills? if so how many mg? 50mg or 100mg? i won’t be seen by my obgyn till 8 weeks. idk how far along i am. my cycles range from 30-35 days. my last period was jan 4th and i ovulated a lot earlier than usual. i wanna say i ovulated between give or take jan 13th - 17th. if you have guesses of how far along i am please feel free to tell me.