My husbands baby or Matts baby

So i had sex with my husband on the 22nd of april ... 9 days later got my regular bloody heavy period may1st-6 then had sex with an old partner on may 19th 20th and so on ( we got a room for a month) so on june 18th i went to the ER because i got a light pink spot when i wiped myself that previous night and i was 6w1d .. (4w1d) pregnant. Who is my childs father? I am due in February 5th or 10th i was given both dates please help me figure this out . Dont judge me

Is my baby for my husband or matt??

This was from june 18th ...

Please dont insist i get DNA because the sexual intercourses were a month apart from

Eachother

My ogbyn is saying it is matts baby since i am due in February i have a conception month of may and according to a normal regular period i got pregnant may 15th ( i know i dont have a 28 day CYCLE ) and i didnt have sex may 15 i had sex may 19th then so on with the same guy (matt)