I think by tubal you mean ectopic pregnancy. These can be dangerous and in some cases life threatening. How do you know you have one? Were you diagnosed? If so you should know that you will not be able to go through with the pregnancy and you need to go to the doctor asap to get treatment. Here are a list of treatments:
* expectant management - a proportion of all ectopics will not progress to tubal rupture, but will regress spontaneously and be slowly absorbed. This may be appropriate if the level of hcg is falling and a woman is clincally well.
* medical treatment - with a drug called methotrexate, which is given by injection. This makes the ectopic pregnancy shrink away by stopping the cells dividing. Only a few ectopics can be treated this way, which is the least invasive. Certain criteria must be fulfilled, such as small diameter of the ectopic and low level of hcg. Close follow-up with further scans and blood tests is also necessary.
* laparoscopic surgery - via 'keyhole' surgery, it may be possible to either open the tube and remove the pregnancy (salpingotomy), or remove the tube altogether (salpingectomy). The decision on which of these options is taken is very specific to each patient. Follow-up with blood tests for hcg will more than likely be needed as persistant ectopic tissue can occur in 5-10%.
* open surgery (laparotomy) - this involves a 5cm incision at the top of the pubic hairline. The affected tube is brought out and either salpingotomy or salpingectomy performed.
You must tell one of your parents/guardians and get medical attention asap. Please let us know how your doing.

Hey sweetie, first off the guy obviously is not worth your time if he just used you for "a quick sleep" you dont need him or sex at your age. Yes you can still have a period while you are pregnant it will just be very light. Most women dont though. You need to go see a doctor and have this taken care of. Its not a good thing. And you need to tell your parents or gaurdian or someone who is taking care of you. Much love melissa