Need some help!

Hey everyone. So I have a irregular cycle. I had my last period on April and since my husband was away we didn't do anything. Only the day we had sex was June 1st. I found i was pregnant on 25th when i did a pregnancy test. Since i have an irregular cycle I don't know how far along i was on 25th.I did my beta on 29th and it was 248. So according to that how many weeks pregnant will i be now?