TTC after chemical pregnancy

how long did it take you to get a BFP after a chemical? we found out last week we had a chemical pregnancy at around 3 weeks. I had gotten a positive a few days before a visit to the Dr and tested negative there. they are starting me on something to basically jump start my period and get everything out because I am over a week late and have no signs of anything. and we want to start trying again asap just scared of getting my hopes up to get pregnant as fast again. this was only our first month to try. the Dr said it'll happen again quick but I'm so scared 😭