Possibility of being pregnant

Hi mga momsh, ask ko lang po kung may possibility na I’m pregnant. Nag do po kami ni hubby nung 13 without protection though withdrawal po. Im being paranoid because I just gave birth last May and my pregnancy is a very sensitive one(high risk/ low lying placenta/ soft cervix). I took pregnancy test last September 30 and it came out negative. My paranoia is eating me up as I wait for my next period to come which is on October 5. 😣😔 P. S. We are financially capable naman po and my husband is very supportive about it. He just said the other day that “im the best that happened to him” as he can see my anxiety and paranoia about this. I don’t know if my body is ready again for another pregnancy.