Miscarriage Last month now missed period could I be pregnant?

Rely

Hello. I had a miscarriage on August 10th and bled for 3 days. I had read another post that said to count it as cycle day 1 in order to try and find cycle again. Around cycle day 4 I took a pregnancy test and it finally said negative. Around cycle day 11 I started taking OPKT but didn’t see anything on them until about cycle day 15 when a surge began and we had sex every other day that week just in case. According to both the apps I use I should have ovulated around that time and my period is now 5 days late according to the prediction. However I have no symptoms and I have taken 3 negative pregnancy tests, one 5 days before missed period, 1 a day before missed period and one 1 day late. Could I actually be pregnant again or is my body just still healing from the last miscarriage and my cycle is still a little off? I just don’t want to take another test and be disappointed.