Sometimes, periods be­come irregular because­ of hormones or medicine. To ge­t pregnant faster, track your ovulation cycle. Look for signs like­ changes in cervical fluid or use an ovulation te­st kit. Staying healthy, eating well, and e­xercising regularly can also help fe­rtility. 

After a hysterectomy, the ovaries may or may not be removed depending on the type of hysterectomy. If the ovaries are left in place, they remain attached to the pelvic sidewall and are typically connected to blood vessels called the ovarian vessels.

Yes, there is a chance but it is low. Now, the sperm in the precum can cause pregnancy, although they are sterile days. This might happen in case the sperm lives long enough until the egg comes out. Unplanned pregnancies can be avoided by using a condom every time you have sex.

Kissing does not transmit HIV.. Negative results are reliable.. No further testing needed. 

Just before your period, if you do a pregnancy test and the result is positive, it could be that you indeed might be pregnant. This can happen, because of the production of hCG by your body which is detected by the test. You can still have the impression of a period being on the way and yet, hCG may occur in early pregnancy. If you have doubts about the result, you can verify it by performing a second test a couple of days later.