I had my period on Nov 10 or 11 I had intercourse with Guy a on the 16 my.boyfriend and I got back together and had sex 25/26 27 29 and dec 1st I took two test the week after came out negative then took two more tests on the 12 and both positive on December 22 my doctor said I was 5weeks and 2 days who is the father?

The dates are too close together to tell for sure. A DNA test will need to be run to establish paternity after the birth of the child.
Dating is all Best Guess and not definite.

I believe its my boyfriends since I was a month and two weeks on Dec.26 and I hear doctors add two weeks to the pregnancy is this true?

No that is not true, they will estimate from testing the development of the fetus. And give you an exact date according to estmates.

That date the doctor gives you is give or take one to two weeks.

So it could be either man.

Next you can not test one or two weeks after sex with pregnancy test, they will always show negative

This close together, there is no possible way to know which man is the father before you do a DNA test after the child is born.

You may hope it is the boy friend, but from the information given, there is no way at all to know

Is there anyway to do a DNA test while still being pregnant

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Originally Posted by liz04

Is there anyway to do a DNA test while still being pregnant

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Yes, through amniocentesis, which is a very risky procedure. I don't know of any doctor that will do this for the sole purpose of a DNA test.

Okay. Do you think the doctor will be able to give me a conception date for my next appointment on Jan 4

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Originally Posted by liz04

Okay. Do you think the doctor will be able to give me a conception date for my next appointment on Jan 4

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They can give you an estimate. That's all they can do, even with an ultrasound. Every date they give you is a best guess, and can be off by as much as a month.

You won't get the answer to your question by guessed dates. Only a DNA test will give you the answer. That's really the only option, no matter how many times you ask, or how much you hope that it's your boyfriend's, you will need a DNA test to determine paternity in this case.

Good luck.